19604975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{337}}^1$

素因数の和:539

約数の個数: 24

約数和(自身を含む): 26404560

約数和(自身を除く): 6799585

約数列:

[1, 5, 13, 25, 65, 179, 325, 337, 895, 1685, 2327, 4381, 4475, 8425, 11635, 21905, 58175, 60323, 109525, 301615, 784199, 1508075, 3920995, 19604975]

約数ペア:

[(1, 19604975), (5, 3920995), (13, 1508075), (25, 784199), (65, 301615), (179, 109525), (325, 60323), (337, 58175), (895, 21905), (1685, 11635), (2327, 8425), (4381, 4475)]