66897620

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{47111}}^1$

素因数の和:47191

約数の個数: 24

約数和(自身を含む): 142466688

約数和(自身を除く): 75569068

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 47111, 94222, 188444, 235555, 471110, 942220, 3344881, 6689762, 13379524, 16724405, 33448810, 66897620]

約数ペア:

[(1, 66897620), (2, 33448810), (4, 16724405), (5, 13379524), (10, 6689762), (20, 3344881), (71, 942220), (142, 471110), (284, 235555), (355, 188444), (710, 94222), (1420, 47111)]