81572548

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{229}}^1$

素因数の和:404

約数の個数: 48

約数和(自身を含む): 155848000

約数和(自身を除く): 74275452

約数列:

[1, 2, 4, 19, 38, 43, 76, 86, 109, 172, 218, 229, 436, 458, 817, 916, 1634, 2071, 3268, 4142, 4351, 4687, 8284, 8702, 9374, 9847, 17404, 18748, 19694, 24961, 39388, 49922, 89053, 99844, 178106, 187093, 356212, 374186, 474259, 748372, 948518, 1073323, 1897036, 2146646, 4293292, 20393137, 40786274, 81572548]

約数ペア:

[(1, 81572548), (2, 40786274), (4, 20393137), (19, 4293292), (38, 2146646), (43, 1897036), (76, 1073323), (86, 948518), (109, 748372), (172, 474259), (218, 374186), (229, 356212), (436, 187093), (458, 178106), (817, 99844), (916, 89053), (1634, 49922), (2071, 39388), (3268, 24961), (4142, 19694), (4351, 18748), (4687, 17404), (8284, 9847), (8702, 9374)]