18208040

素因数分解:

$2^3\times 5^1\times {\mathrm{455201}}^1$

素因数の和:455212

約数の個数: 16

約数和(自身を含む): 40968180

約数和(自身を除く): 22760140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 455201, 910402, 1820804, 2276005, 3641608, 4552010, 9104020, 18208040]

約数ペア:

[(1, 18208040), (2, 9104020), (4, 4552010), (5, 3641608), (8, 2276005), (10, 1820804), (20, 910402), (40, 455201)]