21651575

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1831}}^1$

素因数の和:1895

約数の個数: 24

約数和(自身を含む): 29986176

約数和(自身を除く): 8334601

約数列:

[1, 5, 11, 25, 43, 55, 215, 275, 473, 1075, 1831, 2365, 9155, 11825, 20141, 45775, 78733, 100705, 393665, 503525, 866063, 1968325, 4330315, 21651575]

約数ペア:

[(1, 21651575), (5, 4330315), (11, 1968325), (25, 866063), (43, 503525), (55, 393665), (215, 100705), (275, 78733), (473, 45775), (1075, 20141), (1831, 11825), (2365, 9155)]