18680740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71849}}^1$

素因数の和:71871

約数の個数: 24

約数和(自身を含む): 42247800

約数和(自身を除く): 23567060

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 71849, 143698, 287396, 359245, 718490, 934037, 1436980, 1868074, 3736148, 4670185, 9340370, 18680740]

約数ペア:

[(1, 18680740), (2, 9340370), (4, 4670185), (5, 3736148), (10, 1868074), (13, 1436980), (20, 934037), (26, 718490), (52, 359245), (65, 287396), (130, 143698), (260, 71849)]