21040472

素因数分解:

$2^3\times {\mathrm{809}}^1\times {\mathrm{3251}}^1$

素因数の和:4066

約数の個数: 16

約数和(自身を含む): 39511800

約数和(自身を除く): 18471328

約数列:

[1, 2, 4, 8, 809, 1618, 3236, 3251, 6472, 6502, 13004, 26008, 2630059, 5260118, 10520236, 21040472]

約数ペア:

[(1, 21040472), (2, 10520236), (4, 5260118), (8, 2630059), (809, 26008), (1618, 13004), (3236, 6502), (3251, 6472)]