66491140

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{42083}}^1$

素因数の和:42171

約数の個数: 24

約数和(自身を含む): 141402240

約数和(自身を除く): 74911100

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 42083, 84166, 168332, 210415, 420830, 841660, 3324557, 6649114, 13298228, 16622785, 33245570, 66491140]

約数ペア:

[(1, 66491140), (2, 33245570), (4, 16622785), (5, 13298228), (10, 6649114), (20, 3324557), (79, 841660), (158, 420830), (316, 210415), (395, 168332), (790, 84166), (1580, 42083)]