20509993

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{937}}^1$

素因数の和:1056

約数の個数: 16

約数和(自身を含む): 24312960

約数和(自身を除く): 3802967

約数列:

[1, 7, 53, 59, 371, 413, 937, 3127, 6559, 21889, 49661, 55283, 347627, 386981, 2929999, 20509993]

約数ペア:

[(1, 20509993), (7, 2929999), (53, 386981), (59, 347627), (371, 55283), (413, 49661), (937, 21889), (3127, 6559)]