20125075

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{193}}^1$

素因数の和:343

約数の個数: 24

約数和(自身を含む): 25932368

約数和(自身を除く): 5807293

約数列:

[1, 5, 25, 43, 97, 193, 215, 485, 965, 1075, 2425, 4171, 4825, 8299, 18721, 20855, 41495, 93605, 104275, 207475, 468025, 805003, 4025015, 20125075]

約数ペア:

[(1, 20125075), (5, 4025015), (25, 805003), (43, 468025), (97, 207475), (193, 104275), (215, 93605), (485, 41495), (965, 20855), (1075, 18721), (2425, 8299), (4171, 4825)]