31345209

素因数分解:

$3^2\times 7^1\times {\mathrm{647}}^1\times {\mathrm{769}}^1$

素因数の和:1429

約数の個数: 24

約数和(自身を含む): 51891840

約数和(自身を除く): 20546631

約数列:

[1, 3, 7, 9, 21, 63, 647, 769, 1941, 2307, 4529, 5383, 5823, 6921, 13587, 16149, 40761, 48447, 497543, 1492629, 3482801, 4477887, 10448403, 31345209]

約数ペア:

[(1, 31345209), (3, 10448403), (7, 4477887), (9, 3482801), (21, 1492629), (63, 497543), (647, 48447), (769, 40761), (1941, 16149), (2307, 13587), (4529, 6921), (5383, 5823)]