21825405

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{359}}^1$

素因数の和:570

約数の個数: 48

約数和(自身を含む): 43580160

約数和(自身を除く): 21754755

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 193, 315, 359, 579, 965, 1077, 1351, 1737, 1795, 2513, 2895, 3231, 4053, 5385, 6755, 7539, 8685, 12159, 12565, 16155, 20265, 22617, 37695, 60795, 69287, 113085, 207861, 346435, 485009, 623583, 1039305, 1455027, 2425045, 3117915, 4365081, 7275135, 21825405]

約数ペア:

[(1, 21825405), (3, 7275135), (5, 4365081), (7, 3117915), (9, 2425045), (15, 1455027), (21, 1039305), (35, 623583), (45, 485009), (63, 346435), (105, 207861), (193, 113085), (315, 69287), (359, 60795), (579, 37695), (965, 22617), (1077, 20265), (1351, 16155), (1737, 12565), (1795, 12159), (2513, 8685), (2895, 7539), (3231, 6755), (4053, 5385)]