21116225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1511}}^1$

素因数の和:1577

約数の個数: 24

約数和(自身を含む): 28873152

約数和(自身を除く): 7756927

約数列:

[1, 5, 13, 25, 43, 65, 215, 325, 559, 1075, 1511, 2795, 7555, 13975, 19643, 37775, 64973, 98215, 324865, 491075, 844649, 1624325, 4223245, 21116225]

約数ペア:

[(1, 21116225), (5, 4223245), (13, 1624325), (25, 844649), (43, 491075), (65, 324865), (215, 98215), (325, 64973), (559, 37775), (1075, 19643), (1511, 13975), (2795, 7555)]