21003789

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{269}}^1\times {\mathrm{1531}}^1$

素因数の和:1820

約数の個数: 16

約数和(自身を含む): 29782080

約数和(自身を除く): 8778291

約数列:

[1, 3, 17, 51, 269, 807, 1531, 4573, 4593, 13719, 26027, 78081, 411839, 1235517, 7001263, 21003789]

約数ペア:

[(1, 21003789), (3, 7001263), (17, 1235517), (51, 411839), (269, 78081), (807, 26027), (1531, 13719), (4573, 4593)]