31278351

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 50595840

約数和(自身を除く): 19317489

約数列:

[1, 3, 13, 17, 19, 39, 51, 57, 169, 191, 221, 247, 323, 507, 573, 663, 741, 969, 2483, 2873, 3211, 3247, 3629, 4199, 7449, 8619, 9633, 9741, 10887, 12597, 32279, 42211, 47177, 54587, 61693, 96837, 126633, 141531, 163761, 185079, 548743, 613301, 802009, 1646229, 1839903, 2406027, 10426117, 31278351]

約数ペア:

[(1, 31278351), (3, 10426117), (13, 2406027), (17, 1839903), (19, 1646229), (39, 802009), (51, 613301), (57, 548743), (169, 185079), (191, 163761), (221, 141531), (247, 126633), (323, 96837), (507, 61693), (573, 54587), (663, 47177), (741, 42211), (969, 32279), (2483, 12597), (2873, 10887), (3211, 9741), (3247, 9633), (3629, 8619), (4199, 7449)]