81015880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{10831}}^1$

素因数の和:10870

約数の個数: 64

約数和(自身を含む): 210574080

約数和(自身を除く): 129558200

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 85, 88, 110, 136, 170, 187, 220, 340, 374, 440, 680, 748, 935, 1496, 1870, 3740, 7480, 10831, 21662, 43324, 54155, 86648, 108310, 119141, 184127, 216620, 238282, 368254, 433240, 476564, 595705, 736508, 920635, 953128, 1191410, 1473016, 1841270, 2025397, 2382820, 3682540, 4050794, 4765640, 7365080, 8101588, 10126985, 16203176, 20253970, 40507940, 81015880]

約数ペア:

[(1, 81015880), (2, 40507940), (4, 20253970), (5, 16203176), (8, 10126985), (10, 8101588), (11, 7365080), (17, 4765640), (20, 4050794), (22, 3682540), (34, 2382820), (40, 2025397), (44, 1841270), (55, 1473016), (68, 1191410), (85, 953128), (88, 920635), (110, 736508), (136, 595705), (170, 476564), (187, 433240), (220, 368254), (340, 238282), (374, 216620), (440, 184127), (680, 119141), (748, 108310), (935, 86648), (1496, 54155), (1870, 43324), (3740, 21662), (7480, 10831)]