78828040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{421}}^1$

素因数の和:614

約数の個数: 64

約数和(自身を含む): 184734720

約数和(自身を除く): 105906680

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 151, 155, 248, 302, 310, 421, 604, 620, 755, 842, 1208, 1240, 1510, 1684, 2105, 3020, 3368, 4210, 4681, 6040, 8420, 9362, 13051, 16840, 18724, 23405, 26102, 37448, 46810, 52204, 63571, 65255, 93620, 104408, 127142, 130510, 187240, 254284, 261020, 317855, 508568, 522040, 635710, 1271420, 1970701, 2542840, 3941402, 7882804, 9853505, 15765608, 19707010, 39414020, 78828040]

約数ペア:

[(1, 78828040), (2, 39414020), (4, 19707010), (5, 15765608), (8, 9853505), (10, 7882804), (20, 3941402), (31, 2542840), (40, 1970701), (62, 1271420), (124, 635710), (151, 522040), (155, 508568), (248, 317855), (302, 261020), (310, 254284), (421, 187240), (604, 130510), (620, 127142), (755, 104408), (842, 93620), (1208, 65255), (1240, 63571), (1510, 52204), (1684, 46810), (2105, 37448), (3020, 26102), (3368, 23405), (4210, 18724), (4681, 16840), (6040, 13051), (8420, 9362)]