19787260

素因数分解:

$2^2\times 5^1\times {\mathrm{881}}^1\times {\mathrm{1123}}^1$

素因数の和:2013

約数の個数: 24

約数和(自身を含む): 41637456

約数和(自身を除く): 21850196

約数列:

[1, 2, 4, 5, 10, 20, 881, 1123, 1762, 2246, 3524, 4405, 4492, 5615, 8810, 11230, 17620, 22460, 989363, 1978726, 3957452, 4946815, 9893630, 19787260]

約数ペア:

[(1, 19787260), (2, 9893630), (4, 4946815), (5, 3957452), (10, 1978726), (20, 989363), (881, 22460), (1123, 17620), (1762, 11230), (2246, 8810), (3524, 5615), (4405, 4492)]