90651380

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{63839}}^1$

素因数の和:63919

約数の個数: 24

約数和(自身を含む): 193052160

約数和(自身を除く): 102400780

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 63839, 127678, 255356, 319195, 638390, 1276780, 4532569, 9065138, 18130276, 22662845, 45325690, 90651380]

約数ペア:

[(1, 90651380), (2, 45325690), (4, 22662845), (5, 18130276), (10, 9065138), (20, 4532569), (71, 1276780), (142, 638390), (284, 319195), (355, 255356), (710, 127678), (1420, 63839)]