81712180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{9059}}^1$

素因数の和:9120

約数の個数: 48

約数和(自身を含む): 191782080

約数和(自身を除く): 110069900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 410, 451, 820, 902, 1804, 2255, 4510, 9020, 9059, 18118, 36236, 45295, 90590, 99649, 181180, 199298, 371419, 398596, 498245, 742838, 996490, 1485676, 1857095, 1992980, 3714190, 4085609, 7428380, 8171218, 16342436, 20428045, 40856090, 81712180]

約数ペア:

[(1, 81712180), (2, 40856090), (4, 20428045), (5, 16342436), (10, 8171218), (11, 7428380), (20, 4085609), (22, 3714190), (41, 1992980), (44, 1857095), (55, 1485676), (82, 996490), (110, 742838), (164, 498245), (205, 398596), (220, 371419), (410, 199298), (451, 181180), (820, 99649), (902, 90590), (1804, 45295), (2255, 36236), (4510, 18118), (9020, 9059)]