256721850

素因数分解:

$2^1\times 3^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:306

約数の個数: 288

約数和(自身を含む): 891371520

約数和(自身を除く): 634649670

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 11, 14, 15, 18, 21, 22, 25, 30, 31, 33, 35, 42, 45, 50, 55, 62, 63, 66, 70, 75, 77, 90, 93, 99, 105, 110, 126, 150, 154, 155, 165, 175, 186, 198, 210, 217, 225, 231, 239, 275, 279, 310, 315, 330, 341, 350, 385, 434, 450, 462, 465, 478, 495, 525, 550, 558, 630, 651, 682, 693, 717, 770, 775, 825, 930, 990, 1023, 1050, 1085, 1155, 1195, 1302, 1386, 1395, 1434, 1550, 1575, 1650, 1673, 1705, 1925, 1953, 2046, 2151, 2170, 2310, 2325, 2387, 2390, 2475, 2629, 2790, 3069, 3150, 3255, 3346, 3410, 3465, 3585, 3850, 3906, 4302, 4650, 4774, 4950, 5019, 5115, 5258, 5425, 5775, 5975, 6138, 6510, 6930, 6975, 7161, 7170, 7409, 7887, 8365, 8525, 9765, 10038, 10230, 10755, 10850, 11550, 11935, 11950, 13145, 13950, 14322, 14818, 15057, 15345, 15774, 16275, 16730, 17050, 17325, 17925, 18403, 19530, 21483, 21510, 22227, 23661, 23870, 25095, 25575, 26290, 30114, 30690, 32550, 34650, 35805, 35850, 36806, 37045, 39435, 41825, 42966, 44454, 47322, 48825, 50190, 51150, 51863, 53775, 55209, 59675, 65725, 66681, 71610, 74090, 75285, 76725, 78870, 81499, 83650, 92015, 97650, 103726, 107415, 107550, 110418, 111135, 118305, 119350, 125475, 131450, 133362, 150570, 153450, 155589, 162998, 165627, 179025, 184030, 185225, 197175, 214830, 222270, 236610, 244497, 250950, 259315, 276045, 311178, 331254, 333405, 358050, 370450, 376425, 394350, 407495, 460075, 466767, 488994, 518630, 537075, 552090, 555675, 570493, 591525, 666810, 733491, 752850, 777945, 814990, 828135, 920150, 933534, 1074150, 1111350, 1140986, 1183050, 1222485, 1296575, 1380225, 1466982, 1555890, 1656270, 1667025, 1711479, 2037475, 2333835, 2444970, 2593150, 2760450, 2852465, 3334050, 3422958, 3667455, 3889725, 4074950, 4140675, 4667670, 5134437, 5704930, 6112425, 7334910, 7779450, 8281350, 8557395, 10268874, 11669175, 12224850, 14262325, 17114790, 18337275, 23338350, 25672185, 28524650, 36674550, 42786975, 51344370, 85573950, 128360925, 256721850]

約数ペア:

[(1, 256721850), (2, 128360925), (3, 85573950), (5, 51344370), (6, 42786975), (7, 36674550), (9, 28524650), (10, 25672185), (11, 23338350), (14, 18337275), (15, 17114790), (18, 14262325), (21, 12224850), (22, 11669175), (25, 10268874), (30, 8557395), (31, 8281350), (33, 7779450), (35, 7334910), (42, 6112425), (45, 5704930), (50, 5134437), (55, 4667670), (62, 4140675), (63, 4074950), (66, 3889725), (70, 3667455), (75, 3422958), (77, 3334050), (90, 2852465), (93, 2760450), (99, 2593150), (105, 2444970), (110, 2333835), (126, 2037475), (150, 1711479), (154, 1667025), (155, 1656270), (165, 1555890), (175, 1466982), (186, 1380225), (198, 1296575), (210, 1222485), (217, 1183050), (225, 1140986), (231, 1111350), (239, 1074150), (275, 933534), (279, 920150), (310, 828135), (315, 814990), (330, 777945), (341, 752850), (350, 733491), (385, 666810), (434, 591525), (450, 570493), (462, 555675), (465, 552090), (478, 537075), (495, 518630), (525, 488994), (550, 466767), (558, 460075), (630, 407495), (651, 394350), (682, 376425), (693, 370450), (717, 358050), (770, 333405), (775, 331254), (825, 311178), (930, 276045), (990, 259315), (1023, 250950), (1050, 244497), (1085, 236610), (1155, 222270), (1195, 214830), (1302, 197175), (1386, 185225), (1395, 184030), (1434, 179025), (1550, 165627), (1575, 162998), (1650, 155589), (1673, 153450), (1705, 150570), (1925, 133362), (1953, 131450), (2046, 125475), (2151, 119350), (2170, 118305), (2310, 111135), (2325, 110418), (2387, 107550), (2390, 107415), (2475, 103726), (2629, 97650), (2790, 92015), (3069, 83650), (3150, 81499), (3255, 78870), (3346, 76725), (3410, 75285), (3465, 74090), (3585, 71610), (3850, 66681), (3906, 65725), (4302, 59675), (4650, 55209), (4774, 53775), (4950, 51863), (5019, 51150), (5115, 50190), (5258, 48825), (5425, 47322), (5775, 44454), (5975, 42966), (6138, 41825), (6510, 39435), (6930, 37045), (6975, 36806), (7161, 35850), (7170, 35805), (7409, 34650), (7887, 32550), (8365, 30690), (8525, 30114), (9765, 26290), (10038, 25575), (10230, 25095), (10755, 23870), (10850, 23661), (11550, 22227), (11935, 21510), (11950, 21483), (13145, 19530), (13950, 18403), (14322, 17925), (14818, 17325), (15057, 17050), (15345, 16730), (15774, 16275)]