21556725

素因数分解:

$3^1\times 5^2\times {\mathrm{197}}^1\times {\mathrm{1459}}^1$

素因数の和:1669

約数の個数: 24

約数和(自身を含む): 35845920

約数和(自身を除く): 14289195

約数列:

[1, 3, 5, 15, 25, 75, 197, 591, 985, 1459, 2955, 4377, 4925, 7295, 14775, 21885, 36475, 109425, 287423, 862269, 1437115, 4311345, 7185575, 21556725]

約数ペア:

[(1, 21556725), (3, 7185575), (5, 4311345), (15, 1437115), (25, 862269), (75, 287423), (197, 109425), (591, 36475), (985, 21885), (1459, 14775), (2955, 7295), (4377, 4925)]