21315978

素因数分解:

$2^1\times 3^2\times {\mathrm{593}}^1\times {\mathrm{1997}}^1$

素因数の和:2598

約数の個数: 24

約数和(自身を含む): 46285668

約数和(自身を除く): 24969690

約数列:

[1, 2, 3, 6, 9, 18, 593, 1186, 1779, 1997, 3558, 3994, 5337, 5991, 10674, 11982, 17973, 35946, 1184221, 2368442, 3552663, 7105326, 10657989, 21315978]

約数ペア:

[(1, 21315978), (2, 10657989), (3, 7105326), (6, 3552663), (9, 2368442), (18, 1184221), (593, 35946), (1186, 17973), (1779, 11982), (1997, 10674), (3558, 5991), (3994, 5337)]