21222925

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{401}}^1$

素因数の和:513

約数の個数: 24

約数和(自身を含む): 27665640

約数和(自身を除く): 6442715

約数列:

[1, 5, 25, 29, 73, 145, 365, 401, 725, 1825, 2005, 2117, 10025, 10585, 11629, 29273, 52925, 58145, 146365, 290725, 731825, 848917, 4244585, 21222925]

約数ペア:

[(1, 21222925), (5, 4244585), (25, 848917), (29, 731825), (73, 290725), (145, 146365), (365, 58145), (401, 52925), (725, 29273), (1825, 11629), (2005, 10585), (2117, 10025)]