19890945

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{10781}}^1$

素因数の和:10833

約数の個数: 24

約数和(自身を含む): 35321832

約数和(自身を除く): 15430887

約数列:

[1, 3, 5, 9, 15, 41, 45, 123, 205, 369, 615, 1845, 10781, 32343, 53905, 97029, 161715, 442021, 485145, 1326063, 2210105, 3978189, 6630315, 19890945]

約数ペア:

[(1, 19890945), (3, 6630315), (5, 3978189), (9, 2210105), (15, 1326063), (41, 485145), (45, 442021), (123, 161715), (205, 97029), (369, 53905), (615, 32343), (1845, 10781)]