20909878

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{227}}^1$

素因数の和:372

約数の個数: 32

約数和(自身を含む): 35458560

約数和(自身を除く): 14548682

約数列:

[1, 2, 11, 22, 53, 79, 106, 158, 227, 454, 583, 869, 1166, 1738, 2497, 4187, 4994, 8374, 12031, 17933, 24062, 35866, 46057, 92114, 132341, 197263, 264682, 394526, 950449, 1900898, 10454939, 20909878]

約数ペア:

[(1, 20909878), (2, 10454939), (11, 1900898), (22, 950449), (53, 394526), (79, 264682), (106, 197263), (158, 132341), (227, 92114), (454, 46057), (583, 35866), (869, 24062), (1166, 17933), (1738, 12031), (2497, 8374), (4187, 4994)]