221273090

素因数分解:

$2^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{54101}}^1$

素因数の和:54517

約数の個数: 16

約数和(自身を含む): 399272760

約数和(自身を除く): 177999670

約数列:

[1, 2, 5, 10, 409, 818, 2045, 4090, 54101, 108202, 270505, 541010, 22127309, 44254618, 110636545, 221273090]

約数ペア:

[(1, 221273090), (2, 110636545), (5, 44254618), (10, 22127309), (409, 541010), (818, 270505), (2045, 108202), (4090, 54101)]