12856720

素因数分解:

$2^4\times 5^1\times {\mathrm{160709}}^1$

素因数の和:160722

約数の個数: 20

約数和(自身を含む): 29892060

約数和(自身を除く): 17035340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 160709, 321418, 642836, 803545, 1285672, 1607090, 2571344, 3214180, 6428360, 12856720]

約数ペア:

[(1, 12856720), (2, 6428360), (4, 3214180), (5, 2571344), (8, 1607090), (10, 1285672), (16, 803545), (20, 642836), (40, 321418), (80, 160709)]