20424225

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{193}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 36372672

約数和(自身を除く): 15948447

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 83, 85, 193, 249, 255, 415, 425, 579, 965, 1245, 1275, 1411, 2075, 2895, 3281, 4233, 4825, 6225, 7055, 9843, 14475, 16019, 16405, 21165, 35275, 48057, 49215, 80095, 82025, 105825, 240285, 246075, 272323, 400475, 816969, 1201425, 1361615, 4084845, 6808075, 20424225]

約数ペア:

[(1, 20424225), (3, 6808075), (5, 4084845), (15, 1361615), (17, 1201425), (25, 816969), (51, 400475), (75, 272323), (83, 246075), (85, 240285), (193, 105825), (249, 82025), (255, 80095), (415, 49215), (425, 48057), (579, 35275), (965, 21165), (1245, 16405), (1275, 16019), (1411, 14475), (2075, 9843), (2895, 7055), (3281, 6225), (4233, 4825)]