31840257

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{163}}^1$

素因数の和:357

約数の個数: 32

約数和(自身を含む): 47232000

約数和(自身を除く): 15391743

約数列:

[1, 3, 19, 23, 57, 69, 149, 163, 437, 447, 489, 1311, 2831, 3097, 3427, 3749, 8493, 9291, 10281, 11247, 24287, 65113, 71231, 72861, 195339, 213693, 461453, 558601, 1384359, 1675803, 10613419, 31840257]

約数ペア:

[(1, 31840257), (3, 10613419), (19, 1675803), (23, 1384359), (57, 558601), (69, 461453), (149, 213693), (163, 195339), (437, 72861), (447, 71231), (489, 65113), (1311, 24287), (2831, 11247), (3097, 10281), (3427, 9291), (3749, 8493)]