20615518

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{509}}^1$

素因数の和:792

約数の個数: 32

約数和(自身を含む): 38776320

約数和(自身を除く): 18160802

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 263, 509, 526, 1018, 1841, 2893, 3563, 3682, 5599, 5786, 7126, 11198, 20251, 39193, 40502, 78386, 133867, 267734, 937069, 1472537, 1874138, 2945074, 10307759, 20615518]

約数ペア:

[(1, 20615518), (2, 10307759), (7, 2945074), (11, 1874138), (14, 1472537), (22, 937069), (77, 267734), (154, 133867), (263, 78386), (509, 40502), (526, 39193), (1018, 20251), (1841, 11198), (2893, 7126), (3563, 5786), (3682, 5599)]