21250995

素因数分解:

$3^1\times 5^1\times {\mathrm{401}}^1\times {\mathrm{3533}}^1$

素因数の和:3942

約数の個数: 16

約数和(自身を含む): 34096032

約数和(自身を除く): 12845037

約数列:

[1, 3, 5, 15, 401, 1203, 2005, 3533, 6015, 10599, 17665, 52995, 1416733, 4250199, 7083665, 21250995]

約数ペア:

[(1, 21250995), (3, 7083665), (5, 4250199), (15, 1416733), (401, 52995), (1203, 17665), (2005, 10599), (3533, 6015)]