18817810

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{347}}^1$

素因数の和:411

約数の個数: 64

約数和(自身を含む): 40590720

約数和(自身を除く): 21772910

約数列:

[1, 2, 5, 10, 11, 17, 22, 29, 34, 55, 58, 85, 110, 145, 170, 187, 290, 319, 347, 374, 493, 638, 694, 935, 986, 1595, 1735, 1870, 2465, 3190, 3470, 3817, 4930, 5423, 5899, 7634, 10063, 10846, 11798, 19085, 20126, 27115, 29495, 38170, 50315, 54230, 58990, 64889, 100630, 110693, 129778, 171071, 221386, 324445, 342142, 553465, 648890, 855355, 1106930, 1710710, 1881781, 3763562, 9408905, 18817810]

約数ペア:

[(1, 18817810), (2, 9408905), (5, 3763562), (10, 1881781), (11, 1710710), (17, 1106930), (22, 855355), (29, 648890), (34, 553465), (55, 342142), (58, 324445), (85, 221386), (110, 171071), (145, 129778), (170, 110693), (187, 100630), (290, 64889), (319, 58990), (347, 54230), (374, 50315), (493, 38170), (638, 29495), (694, 27115), (935, 20126), (986, 19085), (1595, 11798), (1735, 10846), (1870, 10063), (2465, 7634), (3190, 5899), (3470, 5423), (3817, 4930)]