20215375

素因数分解:

$5^3\times {\mathrm{43}}^1\times {\mathrm{3761}}^1$

素因数の和:3819

約数の個数: 16

約数和(自身を含む): 25822368

約数和(自身を除く): 5606993

約数列:

[1, 5, 25, 43, 125, 215, 1075, 3761, 5375, 18805, 94025, 161723, 470125, 808615, 4043075, 20215375]

約数ペア:

[(1, 20215375), (5, 4043075), (25, 808615), (43, 470125), (125, 161723), (215, 94025), (1075, 18805), (3761, 5375)]