79722280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{443}}^1$

素因数の和:874

約数の個数: 64

約数和(自身を含む): 196603200

約数和(自身を除く): 116880920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 409, 440, 443, 818, 886, 1636, 1772, 2045, 2215, 3272, 3544, 4090, 4430, 4499, 4873, 8180, 8860, 8998, 9746, 16360, 17720, 17996, 19492, 22495, 24365, 35992, 38984, 44990, 48730, 89980, 97460, 179960, 181187, 194920, 362374, 724748, 905935, 1449496, 1811870, 1993057, 3623740, 3986114, 7247480, 7972228, 9965285, 15944456, 19930570, 39861140, 79722280]

約数ペア:

[(1, 79722280), (2, 39861140), (4, 19930570), (5, 15944456), (8, 9965285), (10, 7972228), (11, 7247480), (20, 3986114), (22, 3623740), (40, 1993057), (44, 1811870), (55, 1449496), (88, 905935), (110, 724748), (220, 362374), (409, 194920), (440, 181187), (443, 179960), (818, 97460), (886, 89980), (1636, 48730), (1772, 44990), (2045, 38984), (2215, 35992), (3272, 24365), (3544, 22495), (4090, 19492), (4430, 17996), (4499, 17720), (4873, 16360), (8180, 9746), (8860, 8998)]