18644890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{811}}^1$

素因数の和:859

約数の個数: 48

約数和(自身を含む): 38878560

約数和(自身を除く): 20233670

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 110, 121, 190, 209, 242, 418, 605, 811, 1045, 1210, 1622, 2090, 2299, 4055, 4598, 8110, 8921, 11495, 15409, 17842, 22990, 30818, 44605, 77045, 89210, 98131, 154090, 169499, 196262, 338998, 490655, 847495, 981310, 1694990, 1864489, 3728978, 9322445, 18644890]

約数ペア:

[(1, 18644890), (2, 9322445), (5, 3728978), (10, 1864489), (11, 1694990), (19, 981310), (22, 847495), (38, 490655), (55, 338998), (95, 196262), (110, 169499), (121, 154090), (190, 98131), (209, 89210), (242, 77045), (418, 44605), (605, 30818), (811, 22990), (1045, 17842), (1210, 15409), (1622, 11495), (2090, 8921), (2299, 8110), (4055, 4598)]