16856720

素因数分解:

$2^4\times 5^1\times {\mathrm{210709}}^1$

素因数の和:210722

約数の個数: 20

約数和(自身を含む): 39192060

約数和(自身を除く): 22335340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 210709, 421418, 842836, 1053545, 1685672, 2107090, 3371344, 4214180, 8428360, 16856720]

約数ペア:

[(1, 16856720), (2, 8428360), (4, 4214180), (5, 3371344), (8, 2107090), (10, 1685672), (16, 1053545), (20, 842836), (40, 421418), (80, 210709)]