21076515

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27551}}^1$

素因数の和:27579

約数の個数: 24

約数和(自身を含む): 38683008

約数和(自身を除く): 17606493

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 27551, 82653, 137755, 247959, 413265, 468367, 1239795, 1405101, 2341835, 4215303, 7025505, 21076515]

約数ペア:

[(1, 21076515), (3, 7025505), (5, 4215303), (9, 2341835), (15, 1405101), (17, 1239795), (45, 468367), (51, 413265), (85, 247959), (153, 137755), (255, 82653), (765, 27551)]