81397360

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5441}}^1$

素因数の和:5482

約数の個数: 80

約数和(自身を含む): 218637792

約数和(自身を除く): 137240432

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 34, 40, 44, 55, 68, 80, 85, 88, 110, 136, 170, 176, 187, 220, 272, 340, 374, 440, 680, 748, 880, 935, 1360, 1496, 1870, 2992, 3740, 5441, 7480, 10882, 14960, 21764, 27205, 43528, 54410, 59851, 87056, 92497, 108820, 119702, 184994, 217640, 239404, 299255, 369988, 435280, 462485, 478808, 598510, 739976, 924970, 957616, 1017467, 1197020, 1479952, 1849940, 2034934, 2394040, 3699880, 4069868, 4788080, 5087335, 7399760, 8139736, 10174670, 16279472, 20349340, 40698680, 81397360]

約数ペア:

[(1, 81397360), (2, 40698680), (4, 20349340), (5, 16279472), (8, 10174670), (10, 8139736), (11, 7399760), (16, 5087335), (17, 4788080), (20, 4069868), (22, 3699880), (34, 2394040), (40, 2034934), (44, 1849940), (55, 1479952), (68, 1197020), (80, 1017467), (85, 957616), (88, 924970), (110, 739976), (136, 598510), (170, 478808), (176, 462485), (187, 435280), (220, 369988), (272, 299255), (340, 239404), (374, 217640), (440, 184994), (680, 119702), (748, 108820), (880, 92497), (935, 87056), (1360, 59851), (1496, 54410), (1870, 43528), (2992, 27205), (3740, 21764), (5441, 14960), (7480, 10882)]