31257486

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{139}}^1$

素因数の和:222

約数の個数: 72

約数和(自身を含む): 75904920

約数和(自身を除く): 44647434

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 31, 39, 62, 78, 93, 117, 139, 186, 234, 278, 279, 403, 417, 558, 806, 834, 961, 1209, 1251, 1807, 1922, 2418, 2502, 2883, 3614, 3627, 4309, 5421, 5766, 7254, 8618, 8649, 10842, 12493, 12927, 16263, 17298, 24986, 25854, 32526, 37479, 38781, 56017, 74958, 77562, 112034, 112437, 133579, 168051, 224874, 267158, 336102, 400737, 504153, 801474, 1008306, 1202211, 1736527, 2404422, 3473054, 5209581, 10419162, 15628743, 31257486]

約数ペア:

[(1, 31257486), (2, 15628743), (3, 10419162), (6, 5209581), (9, 3473054), (13, 2404422), (18, 1736527), (26, 1202211), (31, 1008306), (39, 801474), (62, 504153), (78, 400737), (93, 336102), (117, 267158), (139, 224874), (186, 168051), (234, 133579), (278, 112437), (279, 112034), (403, 77562), (417, 74958), (558, 56017), (806, 38781), (834, 37479), (961, 32526), (1209, 25854), (1251, 24986), (1807, 17298), (1922, 16263), (2418, 12927), (2502, 12493), (2883, 10842), (3614, 8649), (3627, 8618), (4309, 7254), (5421, 5766)]