21258810

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{236209}}^1$

素因数の和:236222

約数の個数: 24

約数和(自身を含む): 55273140

約数和(自身を除く): 34014330

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 236209, 472418, 708627, 1181045, 1417254, 2125881, 2362090, 3543135, 4251762, 7086270, 10629405, 21258810]

約数ペア:

[(1, 21258810), (2, 10629405), (3, 7086270), (5, 4251762), (6, 3543135), (9, 2362090), (10, 2125881), (15, 1417254), (18, 1181045), (30, 708627), (45, 472418), (90, 236209)]