78821800

素因数分解:

$2^3\times 5^2\times {\mathrm{229}}^1\times {\mathrm{1721}}^1$

素因数の和:1966

約数の個数: 48

約数和(自身を含む): 184167900

約数和(自身を除く): 105346100

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 229, 458, 916, 1145, 1721, 1832, 2290, 3442, 4580, 5725, 6884, 8605, 9160, 11450, 13768, 17210, 22900, 34420, 43025, 45800, 68840, 86050, 172100, 344200, 394109, 788218, 1576436, 1970545, 3152872, 3941090, 7882180, 9852725, 15764360, 19705450, 39410900, 78821800]

約数ペア:

[(1, 78821800), (2, 39410900), (4, 19705450), (5, 15764360), (8, 9852725), (10, 7882180), (20, 3941090), (25, 3152872), (40, 1970545), (50, 1576436), (100, 788218), (200, 394109), (229, 344200), (458, 172100), (916, 86050), (1145, 68840), (1721, 45800), (1832, 43025), (2290, 34420), (3442, 22900), (4580, 17210), (5725, 13768), (6884, 11450), (8605, 9160)]