64499840

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3251}}^1$

素因数の和:3301

約数の個数: 64

約数和(自身を含む): 159217920

約数和(自身を除く): 94718080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3251, 3968, 4960, 6502, 9920, 13004, 16255, 19840, 26008, 32510, 52016, 65020, 100781, 104032, 130040, 201562, 208064, 260080, 403124, 416128, 503905, 520160, 806248, 1007810, 1040320, 1612496, 2015620, 2080640, 3224992, 4031240, 6449984, 8062480, 12899968, 16124960, 32249920, 64499840]

約数ペア:

[(1, 64499840), (2, 32249920), (4, 16124960), (5, 12899968), (8, 8062480), (10, 6449984), (16, 4031240), (20, 3224992), (31, 2080640), (32, 2015620), (40, 1612496), (62, 1040320), (64, 1007810), (80, 806248), (124, 520160), (128, 503905), (155, 416128), (160, 403124), (248, 260080), (310, 208064), (320, 201562), (496, 130040), (620, 104032), (640, 100781), (992, 65020), (1240, 52016), (1984, 32510), (2480, 26008), (3251, 19840), (3968, 16255), (4960, 13004), (6502, 9920)]