20100505

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{277}}^1\times {\mathrm{631}}^1$

素因数の和:936

約数の個数: 16

約数和(自身を含む): 25300224

約数和(自身を除く): 5199719

約数列:

[1, 5, 23, 115, 277, 631, 1385, 3155, 6371, 14513, 31855, 72565, 174787, 873935, 4020101, 20100505]

約数ペア:

[(1, 20100505), (5, 4020101), (23, 873935), (115, 174787), (277, 72565), (631, 31855), (1385, 14513), (3155, 6371)]