21911432

素因数分解:

$2^3\times {\mathrm{509}}^1\times {\mathrm{5381}}^1$

素因数の和:5896

約数の個数: 16

約数和(自身を含む): 41172300

約数和(自身を除く): 19260868

約数列:

[1, 2, 4, 8, 509, 1018, 2036, 4072, 5381, 10762, 21524, 43048, 2738929, 5477858, 10955716, 21911432]

約数ペア:

[(1, 21911432), (2, 10955716), (4, 5477858), (8, 2738929), (509, 43048), (1018, 21524), (2036, 10762), (4072, 5381)]