90906980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{64019}}^1$

素因数の和:64099

約数の個数: 24

約数和(自身を含む): 193596480

約数和(自身を除く): 102689500

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 64019, 128038, 256076, 320095, 640190, 1280380, 4545349, 9090698, 18181396, 22726745, 45453490, 90906980]

約数ペア:

[(1, 90906980), (2, 45453490), (4, 22726745), (5, 18181396), (10, 9090698), (20, 4545349), (71, 1280380), (142, 640190), (284, 320095), (355, 256076), (710, 128038), (1420, 64019)]