251121780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15331}}^1$

素因数の和:15366

約数の個数: 144

約数和(自身を含む): 937582464

約数和(自身を除く): 686460684

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 30, 35, 36, 39, 42, 45, 52, 60, 63, 65, 70, 78, 84, 90, 91, 105, 117, 126, 130, 140, 156, 180, 182, 195, 210, 234, 252, 260, 273, 315, 364, 390, 420, 455, 468, 546, 585, 630, 780, 819, 910, 1092, 1170, 1260, 1365, 1638, 1820, 2340, 2730, 3276, 4095, 5460, 8190, 15331, 16380, 30662, 45993, 61324, 76655, 91986, 107317, 137979, 153310, 183972, 199303, 214634, 229965, 275958, 306620, 321951, 398606, 429268, 459930, 536585, 551916, 597909, 643902, 689895, 797212, 919860, 965853, 996515, 1073170, 1195818, 1287804, 1379790, 1395121, 1609755, 1793727, 1931706, 1993030, 2146340, 2391636, 2759580, 2790242, 2989545, 3219510, 3587454, 3863412, 3986060, 4185363, 4829265, 5580484, 5979090, 6439020, 6975605, 7174908, 8370726, 8968635, 9658530, 11958180, 12556089, 13951210, 16741452, 17937270, 19317060, 20926815, 25112178, 27902420, 35874540, 41853630, 50224356, 62780445, 83707260, 125560890, 251121780]

約数ペア:

[(1, 251121780), (2, 125560890), (3, 83707260), (4, 62780445), (5, 50224356), (6, 41853630), (7, 35874540), (9, 27902420), (10, 25112178), (12, 20926815), (13, 19317060), (14, 17937270), (15, 16741452), (18, 13951210), (20, 12556089), (21, 11958180), (26, 9658530), (28, 8968635), (30, 8370726), (35, 7174908), (36, 6975605), (39, 6439020), (42, 5979090), (45, 5580484), (52, 4829265), (60, 4185363), (63, 3986060), (65, 3863412), (70, 3587454), (78, 3219510), (84, 2989545), (90, 2790242), (91, 2759580), (105, 2391636), (117, 2146340), (126, 1993030), (130, 1931706), (140, 1793727), (156, 1609755), (180, 1395121), (182, 1379790), (195, 1287804), (210, 1195818), (234, 1073170), (252, 996515), (260, 965853), (273, 919860), (315, 797212), (364, 689895), (390, 643902), (420, 597909), (455, 551916), (468, 536585), (546, 459930), (585, 429268), (630, 398606), (780, 321951), (819, 306620), (910, 275958), (1092, 229965), (1170, 214634), (1260, 199303), (1365, 183972), (1638, 153310), (1820, 137979), (2340, 107317), (2730, 91986), (3276, 76655), (4095, 61324), (5460, 45993), (8190, 30662), (15331, 16380)]