20691769

素因数分解:

$7^2\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{113}}^1$

素因数の和:265

約数の個数: 24

約数和(自身を含む): 25186248

約数和(自身を除く): 4494479

約数列:

[1, 7, 37, 49, 101, 113, 259, 707, 791, 1813, 3737, 4181, 4949, 5537, 11413, 26159, 29267, 79891, 183113, 204869, 422281, 559237, 2955967, 20691769]

約数ペア:

[(1, 20691769), (7, 2955967), (37, 559237), (49, 422281), (101, 204869), (113, 183113), (259, 79891), (707, 29267), (791, 26159), (1813, 11413), (3737, 5537), (4181, 4949)]