20518126240

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{4136719}}^1$

素因数の和:4136765

約数の個数: 48

約数和(自身を含む): 50037765120

約数和(自身を除く): 29519638880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 4960, 4136719, 8273438, 16546876, 20683595, 33093752, 41367190, 66187504, 82734380, 128238289, 132375008, 165468760, 256476578, 330937520, 512953156, 641191445, 661875040, 1025906312, 1282382890, 2051812624, 2564765780, 4103625248, 5129531560, 10259063120, 20518126240]

約数ペア:

[(1, 20518126240), (2, 10259063120), (4, 5129531560), (5, 4103625248), (8, 2564765780), (10, 2051812624), (16, 1282382890), (20, 1025906312), (31, 661875040), (32, 641191445), (40, 512953156), (62, 330937520), (80, 256476578), (124, 165468760), (155, 132375008), (160, 128238289), (248, 82734380), (310, 66187504), (496, 41367190), (620, 33093752), (992, 20683595), (1240, 16546876), (2480, 8273438), (4960, 4136719)]