21002525

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{491}}^1$

素因数の和:589

約数の個数: 24

約数和(自身を含む): 27453600

約数和(自身を除く): 6451075

約数列:

[1, 5, 25, 29, 59, 145, 295, 491, 725, 1475, 1711, 2455, 8555, 12275, 14239, 28969, 42775, 71195, 144845, 355975, 724225, 840101, 4200505, 21002525]

約数ペア:

[(1, 21002525), (5, 4200505), (25, 840101), (29, 724225), (59, 355975), (145, 144845), (295, 71195), (491, 42775), (725, 28969), (1475, 14239), (1711, 12275), (2455, 8555)]