18881505

素因数分解:

$3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2027}}^1$

素因数の和:2067

約数の個数: 40

約数和(自身を含む): 35335872

約数和(自身を除く): 16454367

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 345, 405, 621, 1035, 1863, 2027, 3105, 6081, 9315, 10135, 18243, 30405, 46621, 54729, 91215, 139863, 164187, 233105, 273645, 419589, 699315, 820935, 1258767, 2097945, 3776301, 6293835, 18881505]

約数ペア:

[(1, 18881505), (3, 6293835), (5, 3776301), (9, 2097945), (15, 1258767), (23, 820935), (27, 699315), (45, 419589), (69, 273645), (81, 233105), (115, 164187), (135, 139863), (207, 91215), (345, 54729), (405, 46621), (621, 30405), (1035, 18243), (1863, 10135), (2027, 9315), (3105, 6081)]