220142853

素因数分解:

$3^4\times 7^1\times {\mathrm{388259}}^1$

素因数の和:388278

約数の個数: 20

約数和(自身を含む): 375835680

約数和(自身を除く): 155692827

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 388259, 1164777, 2717813, 3494331, 8153439, 10482993, 24460317, 31448979, 73380951, 220142853]

約数ペア:

[(1, 220142853), (3, 73380951), (7, 31448979), (9, 24460317), (21, 10482993), (27, 8153439), (63, 3494331), (81, 2717813), (189, 1164777), (567, 388259)]