21764575

素因数分解:

$5^2\times 7^2\times {\mathrm{109}}^1\times {\mathrm{163}}^1$

素因数の和:296

約数の個数: 36

約数和(自身を含む): 31876680

約数和(自身を除く): 10112105

約数列:

[1, 5, 7, 25, 35, 49, 109, 163, 175, 245, 545, 763, 815, 1141, 1225, 2725, 3815, 4075, 5341, 5705, 7987, 17767, 19075, 26705, 28525, 39935, 88835, 124369, 133525, 199675, 444175, 621845, 870583, 3109225, 4352915, 21764575]

約数ペア:

[(1, 21764575), (5, 4352915), (7, 3109225), (25, 870583), (35, 621845), (49, 444175), (109, 199675), (163, 133525), (175, 124369), (245, 88835), (545, 39935), (763, 28525), (815, 26705), (1141, 19075), (1225, 17767), (2725, 7987), (3815, 5705), (4075, 5341)]