20897407490

素因数分解:

$2^1\times 5^1\times {\mathrm{181}}^1\times {\mathrm{547}}^1\times {\mathrm{21107}}^1$

素因数の和:21842

約数の個数: 32

約数和(自身を含む): 37894094784

約数和(自身を除く): 16996687294

約数列:

[1, 2, 5, 10, 181, 362, 547, 905, 1094, 1810, 2735, 5470, 21107, 42214, 99007, 105535, 198014, 211070, 495035, 990070, 3820367, 7640734, 11545529, 19101835, 23091058, 38203670, 57727645, 115455290, 2089740749, 4179481498, 10448703745, 20897407490]

約数ペア:

[(1, 20897407490), (2, 10448703745), (5, 4179481498), (10, 2089740749), (181, 115455290), (362, 57727645), (547, 38203670), (905, 23091058), (1094, 19101835), (1810, 11545529), (2735, 7640734), (5470, 3820367), (21107, 990070), (42214, 495035), (99007, 211070), (105535, 198014)]