20107840

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2027}}^1$

素因数の和:2075

約数の個数: 56

約数和(自身を含む): 49450752

約数和(自身を除く): 29342912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2027, 2480, 4054, 4960, 8108, 9920, 10135, 16216, 20270, 32432, 40540, 62837, 64864, 81080, 125674, 129728, 162160, 251348, 314185, 324320, 502696, 628370, 648640, 1005392, 1256740, 2010784, 2513480, 4021568, 5026960, 10053920, 20107840]

約数ペア:

[(1, 20107840), (2, 10053920), (4, 5026960), (5, 4021568), (8, 2513480), (10, 2010784), (16, 1256740), (20, 1005392), (31, 648640), (32, 628370), (40, 502696), (62, 324320), (64, 314185), (80, 251348), (124, 162160), (155, 129728), (160, 125674), (248, 81080), (310, 64864), (320, 62837), (496, 40540), (620, 32432), (992, 20270), (1240, 16216), (1984, 10135), (2027, 9920), (2480, 8108), (4054, 4960)]