31294881

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 50793600

約数和(自身を除く): 19498719

約数列:

[1, 3, 9, 19, 23, 57, 69, 73, 109, 171, 207, 219, 327, 437, 657, 981, 1311, 1387, 1679, 2071, 2507, 3933, 4161, 5037, 6213, 7521, 7957, 12483, 15111, 18639, 22563, 23871, 31901, 47633, 71613, 95703, 142899, 151183, 183011, 287109, 428697, 453549, 549033, 1360647, 1647099, 3477209, 10431627, 31294881]

約数ペア:

[(1, 31294881), (3, 10431627), (9, 3477209), (19, 1647099), (23, 1360647), (57, 549033), (69, 453549), (73, 428697), (109, 287109), (171, 183011), (207, 151183), (219, 142899), (327, 95703), (437, 71613), (657, 47633), (981, 31901), (1311, 23871), (1387, 22563), (1679, 18639), (2071, 15111), (2507, 12483), (3933, 7957), (4161, 7521), (5037, 6213)]