19947730

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{4423}}^1$

素因数の和:4482

約数の個数: 32

約数和(自身を含む): 40134528

約数和(自身を除く): 20186798

約数列:

[1, 2, 5, 10, 11, 22, 41, 55, 82, 110, 205, 410, 451, 902, 2255, 4423, 4510, 8846, 22115, 44230, 48653, 97306, 181343, 243265, 362686, 486530, 906715, 1813430, 1994773, 3989546, 9973865, 19947730]

約数ペア:

[(1, 19947730), (2, 9973865), (5, 3989546), (10, 1994773), (11, 1813430), (22, 906715), (41, 486530), (55, 362686), (82, 243265), (110, 181343), (205, 97306), (410, 48653), (451, 44230), (902, 22115), (2255, 8846), (4423, 4510)]