21356075

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2857}}^1$

素因数の和:2903

約数の個数: 24

約数和(自身を含む): 29768928

約数和(自身を除く): 8412853

約数列:

[1, 5, 13, 23, 25, 65, 115, 299, 325, 575, 1495, 2857, 7475, 14285, 37141, 65711, 71425, 185705, 328555, 854243, 928525, 1642775, 4271215, 21356075]

約数ペア:

[(1, 21356075), (5, 4271215), (13, 1642775), (23, 928525), (25, 854243), (65, 328555), (115, 185705), (299, 71425), (325, 65711), (575, 37141), (1495, 14285), (2857, 7475)]