21474957

素因数分解:

$3^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{3331}}^1$

素因数の和:3648

約数の個数: 16

約数和(自身を含む): 32840192

約数和(自身を除く): 11365235

約数列:

[1, 3, 7, 21, 307, 921, 2149, 3331, 6447, 9993, 23317, 69951, 1022617, 3067851, 7158319, 21474957]

約数ペア:

[(1, 21474957), (3, 7158319), (7, 3067851), (21, 1022617), (307, 69951), (921, 23317), (2149, 9993), (3331, 6447)]