31361319

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 51891840

約数和(自身を除く): 20530521

約数列:

[1, 3, 9, 11, 33, 43, 53, 99, 129, 139, 159, 387, 417, 473, 477, 583, 1251, 1419, 1529, 1749, 2279, 4257, 4587, 5247, 5977, 6837, 7367, 13761, 17931, 20511, 22101, 25069, 53793, 65747, 66303, 75207, 81037, 197241, 225621, 243111, 316781, 591723, 729333, 950343, 2851029, 3484591, 10453773, 31361319]

約数ペア:

[(1, 31361319), (3, 10453773), (9, 3484591), (11, 2851029), (33, 950343), (43, 729333), (53, 591723), (99, 316781), (129, 243111), (139, 225621), (159, 197241), (387, 81037), (417, 75207), (473, 66303), (477, 65747), (583, 53793), (1251, 25069), (1419, 22101), (1529, 20511), (1749, 17931), (2279, 13761), (4257, 7367), (4587, 6837), (5247, 5977)]