21597675

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{557}}^1$

素因数の和:628

約数の個数: 48

約数和(自身を含む): 39854592

約数和(自身を除く): 18256917

約数列:

[1, 3, 5, 11, 15, 25, 33, 47, 55, 75, 141, 165, 235, 275, 517, 557, 705, 825, 1175, 1551, 1671, 2585, 2785, 3525, 6127, 7755, 8355, 12925, 13925, 18381, 26179, 30635, 38775, 41775, 78537, 91905, 130895, 153175, 287969, 392685, 459525, 654475, 863907, 1439845, 1963425, 4319535, 7199225, 21597675]

約数ペア:

[(1, 21597675), (3, 7199225), (5, 4319535), (11, 1963425), (15, 1439845), (25, 863907), (33, 654475), (47, 459525), (55, 392685), (75, 287969), (141, 153175), (165, 130895), (235, 91905), (275, 78537), (517, 41775), (557, 38775), (705, 30635), (825, 26179), (1175, 18381), (1551, 13925), (1671, 12925), (2585, 8355), (2785, 7755), (3525, 6127)]