21382275

素因数分解:

$3^1\times 5^2\times {\mathrm{137}}^1\times {\mathrm{2081}}^1$

素因数の和:2231

約数の個数: 24

約数和(自身を含む): 35627184

約数和(自身を除く): 14244909

約数列:

[1, 3, 5, 15, 25, 75, 137, 411, 685, 2055, 2081, 3425, 6243, 10275, 10405, 31215, 52025, 156075, 285097, 855291, 1425485, 4276455, 7127425, 21382275]

約数ペア:

[(1, 21382275), (3, 7127425), (5, 4276455), (15, 1425485), (25, 855291), (75, 285097), (137, 156075), (411, 52025), (685, 31215), (2055, 10405), (2081, 10275), (3425, 6243)]