21264575

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{151}}^1$

素因数の和:335

約数の個数: 24

約数和(自身を含む): 27367296

約数和(自身を除く): 6102721

約数列:

[1, 5, 25, 43, 131, 151, 215, 655, 755, 1075, 3275, 3775, 5633, 6493, 19781, 28165, 32465, 98905, 140825, 162325, 494525, 850583, 4252915, 21264575]

約数ペア:

[(1, 21264575), (5, 4252915), (25, 850583), (43, 494525), (131, 162325), (151, 140825), (215, 98905), (655, 32465), (755, 28165), (1075, 19781), (3275, 6493), (3775, 5633)]