31689207

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{991}}^1$

素因数の和:1044

約数の個数: 48

約数和(自身を含む): 55710720

約数和(自身を除く): 24021513

約数列:

[1, 3, 9, 11, 17, 19, 33, 51, 57, 99, 153, 171, 187, 209, 323, 561, 627, 969, 991, 1683, 1881, 2907, 2973, 3553, 8919, 10659, 10901, 16847, 18829, 31977, 32703, 50541, 56487, 98109, 151623, 169461, 185317, 207119, 320093, 555951, 621357, 960279, 1667853, 1864071, 2880837, 3521023, 10563069, 31689207]

約数ペア:

[(1, 31689207), (3, 10563069), (9, 3521023), (11, 2880837), (17, 1864071), (19, 1667853), (33, 960279), (51, 621357), (57, 555951), (99, 320093), (153, 207119), (171, 185317), (187, 169461), (209, 151623), (323, 98109), (561, 56487), (627, 50541), (969, 32703), (991, 31977), (1683, 18829), (1881, 16847), (2907, 10901), (2973, 10659), (3553, 8919)]