21256934

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{5431}}^1$

素因数の和:5555

約数の個数: 16

約数和(自身を含む): 33895680

約数和(自身を除く): 12638746

約数列:

[1, 2, 19, 38, 103, 206, 1957, 3914, 5431, 10862, 103189, 206378, 559393, 1118786, 10628467, 21256934]

約数ペア:

[(1, 21256934), (2, 10628467), (19, 1118786), (38, 559393), (103, 206378), (206, 103189), (1957, 10862), (3914, 5431)]