25721145

素因数分解:

$3^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1549}}^1$

素因数の和:1607

約数の個数: 40

約数和(自身を含む): 47262600

約数和(自身を除く): 21541455

約数列:

[1, 3, 5, 9, 15, 27, 41, 45, 81, 123, 135, 205, 369, 405, 615, 1107, 1549, 1845, 3321, 4647, 5535, 7745, 13941, 16605, 23235, 41823, 63509, 69705, 125469, 190527, 209115, 317545, 571581, 627345, 952635, 1714743, 2857905, 5144229, 8573715, 25721145]

約数ペア:

[(1, 25721145), (3, 8573715), (5, 5144229), (9, 2857905), (15, 1714743), (27, 952635), (41, 627345), (45, 571581), (81, 317545), (123, 209115), (135, 190527), (205, 125469), (369, 69705), (405, 63509), (615, 41823), (1107, 23235), (1549, 16605), (1845, 13941), (3321, 7745), (4647, 5535)]