21564135

素因数分解:

$3^2\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1531}}^1$

素因数の和:1855

約数の個数: 24

約数和(自身を含む): 37521744

約数和(自身を除く): 15957609

約数列:

[1, 3, 5, 9, 15, 45, 313, 939, 1531, 1565, 2817, 4593, 4695, 7655, 13779, 14085, 22965, 68895, 479203, 1437609, 2396015, 4312827, 7188045, 21564135]

約数ペア:

[(1, 21564135), (3, 7188045), (5, 4312827), (9, 2396015), (15, 1437609), (45, 479203), (313, 68895), (939, 22965), (1531, 14085), (1565, 13779), (2817, 7655), (4593, 4695)]