20821818

素因数分解:

$2^1\times 3^1\times {\mathrm{421}}^1\times {\mathrm{8243}}^1$

素因数の和:8669

約数の個数: 16

約数和(自身を含む): 41747616

約数和(自身を除く): 20925798

約数列:

[1, 2, 3, 6, 421, 842, 1263, 2526, 8243, 16486, 24729, 49458, 3470303, 6940606, 10410909, 20821818]

約数ペア:

[(1, 20821818), (2, 10410909), (3, 6940606), (6, 3470303), (421, 49458), (842, 24729), (1263, 16486), (2526, 8243)]