397329040

素因数分解:

$2^4\times 5^1\times {\mathrm{4966613}}^1$

素因数の和:4966626

約数の個数: 20

約数和(自身を含む): 923790204

約数和(自身を除く): 526461164

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4966613, 9933226, 19866452, 24833065, 39732904, 49666130, 79465808, 99332260, 198664520, 397329040]

約数ペア:

[(1, 397329040), (2, 198664520), (4, 99332260), (5, 79465808), (8, 49666130), (10, 39732904), (16, 24833065), (20, 19866452), (40, 9933226), (80, 4966613)]