18596780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{22679}}^1$

素因数の和:22729

約数の個数: 24

約数和(自身を含む): 40007520

約数和(自身を除く): 21410740

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 22679, 45358, 90716, 113395, 226790, 453580, 929839, 1859678, 3719356, 4649195, 9298390, 18596780]

約数ペア:

[(1, 18596780), (2, 9298390), (4, 4649195), (5, 3719356), (10, 1859678), (20, 929839), (41, 453580), (82, 226790), (164, 113395), (205, 90716), (410, 45358), (820, 22679)]