20172687969

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{20438387}}^1$

素因数の和:20438444

約数の個数: 16

約数和(自身を含む): 31393363968

約数和(自身を除く): 11220675999

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 20438387, 61315161, 143068709, 429206127, 960604189, 2881812567, 6724229323, 20172687969]

約数ペア:

[(1, 20172687969), (3, 6724229323), (7, 2881812567), (21, 960604189), (47, 429206127), (141, 143068709), (329, 61315161), (987, 20438387)]