21910895

素因数分解:

$5^1\times {\mathrm{19}}^2\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:303

約数の個数: 24

約数和(自身を含む): 28346400

約数和(自身を除く): 6435505

約数列:

[1, 5, 19, 61, 95, 199, 305, 361, 995, 1159, 1805, 3781, 5795, 12139, 18905, 22021, 60695, 71839, 110105, 230641, 359195, 1153205, 4382179, 21910895]

約数ペア:

[(1, 21910895), (5, 4382179), (19, 1153205), (61, 359195), (95, 230641), (199, 110105), (305, 71839), (361, 60695), (995, 22021), (1159, 18905), (1805, 12139), (3781, 5795)]