256422390

素因数分解:

$2^1\times 3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1$

素因数の和:403

約数の個数: 192

約数和(自身を含む): 784816128

約数和(自身を除く): 528393738

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 17, 21, 30, 31, 34, 35, 42, 49, 51, 62, 70, 85, 93, 98, 102, 105, 119, 147, 155, 170, 186, 210, 217, 238, 245, 255, 294, 310, 331, 357, 434, 465, 490, 510, 527, 595, 651, 662, 714, 735, 833, 930, 993, 1054, 1085, 1190, 1302, 1470, 1519, 1581, 1655, 1666, 1785, 1986, 2170, 2317, 2499, 2635, 3038, 3162, 3255, 3310, 3570, 3689, 4165, 4557, 4634, 4965, 4998, 5270, 5627, 6510, 6951, 7378, 7595, 7905, 8330, 9114, 9930, 10261, 11067, 11254, 11585, 12495, 13902, 15190, 15810, 16219, 16881, 18445, 20522, 22134, 22785, 23170, 24990, 25823, 28135, 30783, 32438, 33762, 34755, 36890, 39389, 45570, 48657, 51305, 51646, 55335, 56270, 61566, 69510, 71827, 77469, 78778, 81095, 84405, 97314, 102610, 110670, 118167, 129115, 143654, 153915, 154938, 162190, 168810, 174437, 196945, 215481, 236334, 243285, 258230, 275723, 307830, 348874, 359135, 387345, 393890, 430962, 486570, 502789, 523311, 551446, 590835, 718270, 774690, 827169, 872185, 1005578, 1046622, 1077405, 1181670, 1221059, 1378615, 1508367, 1654338, 1744370, 2154810, 2442118, 2513945, 2616555, 2757230, 3016734, 3663177, 4135845, 5027890, 5233110, 6105295, 7326354, 7541835, 8271690, 8547413, 12210590, 15083670, 17094826, 18315885, 25642239, 36631770, 42737065, 51284478, 85474130, 128211195, 256422390]

約数ペア:

[(1, 256422390), (2, 128211195), (3, 85474130), (5, 51284478), (6, 42737065), (7, 36631770), (10, 25642239), (14, 18315885), (15, 17094826), (17, 15083670), (21, 12210590), (30, 8547413), (31, 8271690), (34, 7541835), (35, 7326354), (42, 6105295), (49, 5233110), (51, 5027890), (62, 4135845), (70, 3663177), (85, 3016734), (93, 2757230), (98, 2616555), (102, 2513945), (105, 2442118), (119, 2154810), (147, 1744370), (155, 1654338), (170, 1508367), (186, 1378615), (210, 1221059), (217, 1181670), (238, 1077405), (245, 1046622), (255, 1005578), (294, 872185), (310, 827169), (331, 774690), (357, 718270), (434, 590835), (465, 551446), (490, 523311), (510, 502789), (527, 486570), (595, 430962), (651, 393890), (662, 387345), (714, 359135), (735, 348874), (833, 307830), (930, 275723), (993, 258230), (1054, 243285), (1085, 236334), (1190, 215481), (1302, 196945), (1470, 174437), (1519, 168810), (1581, 162190), (1655, 154938), (1666, 153915), (1785, 143654), (1986, 129115), (2170, 118167), (2317, 110670), (2499, 102610), (2635, 97314), (3038, 84405), (3162, 81095), (3255, 78778), (3310, 77469), (3570, 71827), (3689, 69510), (4165, 61566), (4557, 56270), (4634, 55335), (4965, 51646), (4998, 51305), (5270, 48657), (5627, 45570), (6510, 39389), (6951, 36890), (7378, 34755), (7595, 33762), (7905, 32438), (8330, 30783), (9114, 28135), (9930, 25823), (10261, 24990), (11067, 23170), (11254, 22785), (11585, 22134), (12495, 20522), (13902, 18445), (15190, 16881), (15810, 16219)]