18387225

素因数分解:

$3^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{1151}}^1$

素因数の和:1238

約数の個数: 36

約数和(自身を含む): 33426432

約数和(自身を除く): 15039207

約数列:

[1, 3, 5, 9, 15, 25, 45, 71, 75, 213, 225, 355, 639, 1065, 1151, 1775, 3195, 3453, 5325, 5755, 10359, 15975, 17265, 28775, 51795, 81721, 86325, 245163, 258975, 408605, 735489, 1225815, 2043025, 3677445, 6129075, 18387225]

約数ペア:

[(1, 18387225), (3, 6129075), (5, 3677445), (9, 2043025), (15, 1225815), (25, 735489), (45, 408605), (71, 258975), (75, 245163), (213, 86325), (225, 81721), (355, 51795), (639, 28775), (1065, 17265), (1151, 15975), (1775, 10359), (3195, 5755), (3453, 5325)]