18540220

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4157}}^1$

素因数の和:4389

約数の個数: 24

約数和(自身を含む): 39118464

約数和(自身を除く): 20578244

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4157, 4460, 8314, 16628, 20785, 41570, 83140, 927011, 1854022, 3708044, 4635055, 9270110, 18540220]

約数ペア:

[(1, 18540220), (2, 9270110), (4, 4635055), (5, 3708044), (10, 1854022), (20, 927011), (223, 83140), (446, 41570), (892, 20785), (1115, 16628), (2230, 8314), (4157, 4460)]