20219715

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{26431}}^1$

素因数の和:26459

約数の個数: 24

約数和(自身を含む): 37110528

約数和(自身を除く): 16890813

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 26431, 79293, 132155, 237879, 396465, 449327, 1189395, 1347981, 2246635, 4043943, 6739905, 20219715]

約数ペア:

[(1, 20219715), (3, 6739905), (5, 4043943), (9, 2246635), (15, 1347981), (17, 1189395), (45, 449327), (51, 396465), (85, 237879), (153, 132155), (255, 79293), (765, 26431)]