66777680

素因数分解:

$2^4\times 5^1\times {\mathrm{834721}}^1$

素因数の和:834734

約数の個数: 20

約数和(自身を含む): 155258292

約数和(自身を除く): 88480612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 834721, 1669442, 3338884, 4173605, 6677768, 8347210, 13355536, 16694420, 33388840, 66777680]

約数ペア:

[(1, 66777680), (2, 33388840), (4, 16694420), (5, 13355536), (8, 8347210), (10, 6677768), (16, 4173605), (20, 3338884), (40, 1669442), (80, 834721)]