21282521

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:185

約数の個数: 32

約数和(自身を含む): 26127360

約数和(自身を除く): 4844839

約数列:

[1, 13, 17, 23, 53, 79, 221, 299, 391, 689, 901, 1027, 1219, 1343, 1817, 4187, 5083, 11713, 15847, 17459, 20723, 23621, 30889, 54431, 71179, 96301, 269399, 401557, 925327, 1251913, 1637117, 21282521]

約数ペア:

[(1, 21282521), (13, 1637117), (17, 1251913), (23, 925327), (53, 401557), (79, 269399), (221, 96301), (299, 71179), (391, 54431), (689, 30889), (901, 23621), (1027, 20723), (1219, 17459), (1343, 15847), (1817, 11713), (4187, 5083)]