30906640

素因数分解:

$2^4\times 5^1\times {\mathrm{386333}}^1$

素因数の和:386346

約数の個数: 20

約数和(自身を含む): 71858124

約数和(自身を除く): 40951484

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 386333, 772666, 1545332, 1931665, 3090664, 3863330, 6181328, 7726660, 15453320, 30906640]

約数ペア:

[(1, 30906640), (2, 15453320), (4, 7726660), (5, 6181328), (8, 3863330), (10, 3090664), (16, 1931665), (20, 1545332), (40, 772666), (80, 386333)]