20028641

素因数分解:

${\mathrm{19}}^2\times {\mathrm{109}}^1\times {\mathrm{509}}^1$

素因数の和:656

約数の個数: 12

約数和(自身を含む): 21374100

約数和(自身を除く): 1345459

約数列:

[1, 19, 109, 361, 509, 2071, 9671, 39349, 55481, 183749, 1054139, 20028641]

約数ペア:

[(1, 20028641), (19, 1054139), (109, 183749), (361, 55481), (509, 39349), (2071, 9671)]