20611575

素因数分解:

$3^2\times 5^2\times {\mathrm{101}}^1\times {\mathrm{907}}^1$

素因数の和:1024

約数の個数: 36

約数和(自身を含む): 37324248

約数和(自身を除く): 16712673

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 101, 225, 303, 505, 907, 909, 1515, 2525, 2721, 4535, 4545, 7575, 8163, 13605, 22675, 22725, 40815, 68025, 91607, 204075, 274821, 458035, 824463, 1374105, 2290175, 4122315, 6870525, 20611575]

約数ペア:

[(1, 20611575), (3, 6870525), (5, 4122315), (9, 2290175), (15, 1374105), (25, 824463), (45, 458035), (75, 274821), (101, 204075), (225, 91607), (303, 68025), (505, 40815), (907, 22725), (909, 22675), (1515, 13605), (2525, 8163), (2721, 7575), (4535, 4545)]