21380510

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{859}}^1$

素因数の和:1016

約数の個数: 32

約数和(自身を含む): 40867200

約数和(自身を除く): 19486690

約数列:

[1, 2, 5, 10, 19, 38, 95, 131, 190, 262, 655, 859, 1310, 1718, 2489, 4295, 4978, 8590, 12445, 16321, 24890, 32642, 81605, 112529, 163210, 225058, 562645, 1125290, 2138051, 4276102, 10690255, 21380510]

約数ペア:

[(1, 21380510), (2, 10690255), (5, 4276102), (10, 2138051), (19, 1125290), (38, 562645), (95, 225058), (131, 163210), (190, 112529), (262, 81605), (655, 32642), (859, 24890), (1310, 16321), (1718, 12445), (2489, 8590), (4295, 4978)]