66690640

素因数分解:

$2^4\times 5^1\times {\mathrm{833633}}^1$

素因数の和:833646

約数の個数: 20

約数和(自身を含む): 155055924

約数和(自身を除く): 88365284

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 833633, 1667266, 3334532, 4168165, 6669064, 8336330, 13338128, 16672660, 33345320, 66690640]

約数ペア:

[(1, 66690640), (2, 33345320), (4, 16672660), (5, 13338128), (8, 8336330), (10, 6669064), (16, 4168165), (20, 3334532), (40, 1667266), (80, 833633)]