20503406

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{4591}}^1$

素因数の和:4640

約数の個数: 32

約数和(自身を含む): 39674880

約数和(自身を除く): 19171474

約数列:

[1, 2, 7, 11, 14, 22, 29, 58, 77, 154, 203, 319, 406, 638, 2233, 4466, 4591, 9182, 32137, 50501, 64274, 101002, 133139, 266278, 353507, 707014, 931973, 1464529, 1863946, 2929058, 10251703, 20503406]

約数ペア:

[(1, 20503406), (2, 10251703), (7, 2929058), (11, 1863946), (14, 1464529), (22, 931973), (29, 707014), (58, 353507), (77, 266278), (154, 133139), (203, 101002), (319, 64274), (406, 50501), (638, 32137), (2233, 9182), (4466, 4591)]