21032475

素因数分解:

$3^1\times 5^2\times {\mathrm{173}}^1\times {\mathrm{1621}}^1$

素因数の和:1807

約数の個数: 24

約数和(自身を含む): 34996272

約数和(自身を除く): 13963797

約数列:

[1, 3, 5, 15, 25, 75, 173, 519, 865, 1621, 2595, 4325, 4863, 8105, 12975, 24315, 40525, 121575, 280433, 841299, 1402165, 4206495, 7010825, 21032475]

約数ペア:

[(1, 21032475), (3, 7010825), (5, 4206495), (15, 1402165), (25, 841299), (75, 280433), (173, 121575), (519, 40525), (865, 24315), (1621, 12975), (2595, 8105), (4325, 4863)]