20650511

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{541}}^1$

素因数の和:615

約数の個数: 24

約数和(自身を含む): 25950960

約数和(自身を除く): 5300449

約数列:

[1, 7, 19, 41, 49, 133, 287, 541, 779, 931, 2009, 3787, 5453, 10279, 22181, 26509, 38171, 71953, 155267, 421439, 503671, 1086869, 2950073, 20650511]

約数ペア:

[(1, 20650511), (7, 2950073), (19, 1086869), (41, 503671), (49, 421439), (133, 155267), (287, 71953), (541, 38171), (779, 26509), (931, 22181), (2009, 10279), (3787, 5453)]