21903575

素因数分解:

$5^2\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{271}}^1$

素因数の和:395

約数の個数: 24

約数和(自身を含む): 28230336

約数和(自身を除く): 6326761

約数列:

[1, 5, 25, 53, 61, 265, 271, 305, 1325, 1355, 1525, 3233, 6775, 14363, 16165, 16531, 71815, 80825, 82655, 359075, 413275, 876143, 4380715, 21903575]

約数ペア:

[(1, 21903575), (5, 4380715), (25, 876143), (53, 413275), (61, 359075), (265, 82655), (271, 80825), (305, 71815), (1325, 16531), (1355, 16165), (1525, 14363), (3233, 6775)]