71872225

素因数分解:

$5^2\times {\mathrm{79}}^1\times {\mathrm{151}}^1\times {\mathrm{241}}^1$

素因数の和:481

約数の個数: 24

約数和(自身を含む): 91224320

約数和(自身を除く): 19352095

約数列:

[1, 5, 25, 79, 151, 241, 395, 755, 1205, 1975, 3775, 6025, 11929, 19039, 36391, 59645, 95195, 181955, 298225, 475975, 909775, 2874889, 14374445, 71872225]

約数ペア:

[(1, 71872225), (5, 14374445), (25, 2874889), (79, 909775), (151, 475975), (241, 298225), (395, 181955), (755, 95195), (1205, 59645), (1975, 36391), (3775, 19039), (6025, 11929)]