21223395

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27743}}^1$

素因数の和:27771

約数の個数: 24

約数和(自身を含む): 38952576

約数和(自身を除く): 17729181

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 27743, 83229, 138715, 249687, 416145, 471631, 1248435, 1414893, 2358155, 4244679, 7074465, 21223395]

約数ペア:

[(1, 21223395), (3, 7074465), (5, 4244679), (9, 2358155), (15, 1414893), (17, 1248435), (45, 471631), (51, 416145), (85, 249687), (153, 138715), (255, 83229), (765, 27743)]