12999980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{92857}}^1$

素因数の和:92873

約数の個数: 24

約数和(自身を含む): 31200288

約数和(自身を除く): 18200308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 92857, 185714, 371428, 464285, 649999, 928570, 1299998, 1857140, 2599996, 3249995, 6499990, 12999980]

約数ペア:

[(1, 12999980), (2, 6499990), (4, 3249995), (5, 2599996), (7, 1857140), (10, 1299998), (14, 928570), (20, 649999), (28, 464285), (35, 371428), (70, 185714), (140, 92857)]