20764395

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27143}}^1$

素因数の和:27171

約数の個数: 24

約数和(自身を含む): 38110176

約数和(自身を除く): 17345781

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 27143, 81429, 135715, 244287, 407145, 461431, 1221435, 1384293, 2307155, 4152879, 6921465, 20764395]

約数ペア:

[(1, 20764395), (3, 6921465), (5, 4152879), (9, 2307155), (15, 1384293), (17, 1221435), (45, 461431), (51, 407145), (85, 244287), (153, 135715), (255, 81429), (765, 27143)]