28787220

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:131

約数の個数: 288

約数和(自身を含む): 114057216

約数和(自身を除く): 85269996

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 28, 30, 31, 33, 35, 36, 42, 44, 45, 55, 60, 62, 63, 66, 67, 70, 77, 84, 90, 93, 99, 105, 110, 124, 126, 132, 134, 140, 154, 155, 165, 180, 186, 198, 201, 210, 217, 220, 231, 252, 268, 279, 308, 310, 315, 330, 335, 341, 372, 385, 396, 402, 420, 434, 462, 465, 469, 495, 558, 603, 620, 630, 651, 660, 670, 682, 693, 737, 770, 804, 868, 924, 930, 938, 990, 1005, 1023, 1085, 1116, 1155, 1206, 1260, 1302, 1340, 1364, 1386, 1395, 1407, 1474, 1540, 1705, 1860, 1876, 1953, 1980, 2010, 2046, 2077, 2170, 2211, 2310, 2345, 2387, 2412, 2604, 2772, 2790, 2814, 2948, 3015, 3069, 3255, 3410, 3465, 3685, 3906, 4020, 4092, 4154, 4221, 4340, 4422, 4620, 4690, 4774, 5115, 5159, 5580, 5628, 6030, 6138, 6231, 6510, 6633, 6820, 6930, 7035, 7161, 7370, 7812, 8308, 8442, 8844, 9380, 9548, 9765, 10230, 10318, 10385, 11055, 11935, 12060, 12276, 12462, 13020, 13266, 13860, 14070, 14322, 14539, 14740, 15345, 15477, 16884, 18693, 19530, 20460, 20636, 20770, 21105, 21483, 22110, 22847, 23870, 24924, 25795, 26532, 28140, 28644, 29078, 30690, 30954, 31155, 33165, 35805, 37386, 39060, 41540, 42210, 42966, 43617, 44220, 45694, 46431, 47740, 51590, 58156, 61380, 61908, 62310, 66330, 68541, 71610, 72695, 74772, 77385, 84420, 85932, 87234, 91388, 92862, 93465, 103180, 107415, 114235, 124620, 130851, 132660, 137082, 143220, 145390, 154770, 159929, 174468, 185724, 186930, 205623, 214830, 218085, 228470, 232155, 261702, 274164, 290780, 309540, 319858, 342705, 373860, 411246, 429660, 436170, 456940, 464310, 479787, 523404, 639716, 654255, 685410, 799645, 822492, 872340, 928620, 959574, 1028115, 1308510, 1370820, 1439361, 1599290, 1919148, 2056230, 2398935, 2617020, 2878722, 3198580, 4112460, 4797870, 5757444, 7196805, 9595740, 14393610, 28787220]

約数ペア:

[(1, 28787220), (2, 14393610), (3, 9595740), (4, 7196805), (5, 5757444), (6, 4797870), (7, 4112460), (9, 3198580), (10, 2878722), (11, 2617020), (12, 2398935), (14, 2056230), (15, 1919148), (18, 1599290), (20, 1439361), (21, 1370820), (22, 1308510), (28, 1028115), (30, 959574), (31, 928620), (33, 872340), (35, 822492), (36, 799645), (42, 685410), (44, 654255), (45, 639716), (55, 523404), (60, 479787), (62, 464310), (63, 456940), (66, 436170), (67, 429660), (70, 411246), (77, 373860), (84, 342705), (90, 319858), (93, 309540), (99, 290780), (105, 274164), (110, 261702), (124, 232155), (126, 228470), (132, 218085), (134, 214830), (140, 205623), (154, 186930), (155, 185724), (165, 174468), (180, 159929), (186, 154770), (198, 145390), (201, 143220), (210, 137082), (217, 132660), (220, 130851), (231, 124620), (252, 114235), (268, 107415), (279, 103180), (308, 93465), (310, 92862), (315, 91388), (330, 87234), (335, 85932), (341, 84420), (372, 77385), (385, 74772), (396, 72695), (402, 71610), (420, 68541), (434, 66330), (462, 62310), (465, 61908), (469, 61380), (495, 58156), (558, 51590), (603, 47740), (620, 46431), (630, 45694), (651, 44220), (660, 43617), (670, 42966), (682, 42210), (693, 41540), (737, 39060), (770, 37386), (804, 35805), (868, 33165), (924, 31155), (930, 30954), (938, 30690), (990, 29078), (1005, 28644), (1023, 28140), (1085, 26532), (1116, 25795), (1155, 24924), (1206, 23870), (1260, 22847), (1302, 22110), (1340, 21483), (1364, 21105), (1386, 20770), (1395, 20636), (1407, 20460), (1474, 19530), (1540, 18693), (1705, 16884), (1860, 15477), (1876, 15345), (1953, 14740), (1980, 14539), (2010, 14322), (2046, 14070), (2077, 13860), (2170, 13266), (2211, 13020), (2310, 12462), (2345, 12276), (2387, 12060), (2412, 11935), (2604, 11055), (2772, 10385), (2790, 10318), (2814, 10230), (2948, 9765), (3015, 9548), (3069, 9380), (3255, 8844), (3410, 8442), (3465, 8308), (3685, 7812), (3906, 7370), (4020, 7161), (4092, 7035), (4154, 6930), (4221, 6820), (4340, 6633), (4422, 6510), (4620, 6231), (4690, 6138), (4774, 6030), (5115, 5628), (5159, 5580)]