21512953

素因数分解:

$7^1\times {\mathrm{11}}^3\times {\mathrm{2309}}^1$

素因数の和:2349

約数の個数: 16

約数和(自身を含む): 27054720

約数和(自身を除く): 5541767

約数列:

[1, 7, 11, 77, 121, 847, 1331, 2309, 9317, 16163, 25399, 177793, 279389, 1955723, 3073279, 21512953]

約数ペア:

[(1, 21512953), (7, 3073279), (11, 1955723), (77, 279389), (121, 177793), (847, 25399), (1331, 16163), (2309, 9317)]