21079304

素因数分解:

$2^3\times {\mathrm{809}}^1\times {\mathrm{3257}}^1$

素因数の和:4072

約数の個数: 16

約数和(自身を含む): 39584700

約数和(自身を除く): 18505396

約数列:

[1, 2, 4, 8, 809, 1618, 3236, 3257, 6472, 6514, 13028, 26056, 2634913, 5269826, 10539652, 21079304]

約数ペア:

[(1, 21079304), (2, 10539652), (4, 5269826), (8, 2634913), (809, 26056), (1618, 13028), (3236, 6514), (3257, 6472)]