21277965

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{83443}}^1$

素因数の和:83468

約数の個数: 16

約数和(自身を含む): 36047808

約数和(自身を除く): 14769843

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 83443, 250329, 417215, 1251645, 1418531, 4255593, 7092655, 21277965]

約数ペア:

[(1, 21277965), (3, 7092655), (5, 4255593), (15, 1418531), (17, 1251645), (51, 417215), (85, 250329), (255, 83443)]