21124665

素因数分解:

$3^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{937}}^1$

素因数の和:1118

約数の個数: 32

約数和(自身を含む): 37820160

約数和(自身を除く): 16695495

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 167, 501, 835, 937, 1503, 2505, 2811, 4509, 4685, 7515, 8433, 14055, 22545, 25299, 42165, 126495, 156479, 469437, 782395, 1408311, 2347185, 4224933, 7041555, 21124665]

約数ペア:

[(1, 21124665), (3, 7041555), (5, 4224933), (9, 2347185), (15, 1408311), (27, 782395), (45, 469437), (135, 156479), (167, 126495), (501, 42165), (835, 25299), (937, 22545), (1503, 14055), (2505, 8433), (2811, 7515), (4509, 4685)]