21877325

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{433}}^1$

素因数の和:533

約数の個数: 24

約数和(自身を含む): 28414848

約数和(自身を除く): 6537523

約数列:

[1, 5, 25, 43, 47, 215, 235, 433, 1075, 1175, 2021, 2165, 10105, 10825, 18619, 20351, 50525, 93095, 101755, 465475, 508775, 875093, 4375465, 21877325]

約数ペア:

[(1, 21877325), (5, 4375465), (25, 875093), (43, 508775), (47, 465475), (215, 101755), (235, 93095), (433, 50525), (1075, 20351), (1175, 18619), (2021, 10825), (2165, 10105)]