21449816

素因数分解:

$2^3\times {\mathrm{137}}^1\times {\mathrm{19571}}^1$

素因数の和:19714

約数の個数: 16

約数和(自身を含む): 40514040

約数和(自身を除く): 19064224

約数列:

[1, 2, 4, 8, 137, 274, 548, 1096, 19571, 39142, 78284, 156568, 2681227, 5362454, 10724908, 21449816]

約数ペア:

[(1, 21449816), (2, 10724908), (4, 5362454), (8, 2681227), (137, 156568), (274, 78284), (548, 39142), (1096, 19571)]