16816720

素因数分解:

$2^4\times 5^1\times {\mathrm{210209}}^1$

素因数の和:210222

約数の個数: 20

約数和(自身を含む): 39099060

約数和(自身を除く): 22282340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 210209, 420418, 840836, 1051045, 1681672, 2102090, 3363344, 4204180, 8408360, 16816720]

約数ペア:

[(1, 16816720), (2, 8408360), (4, 4204180), (5, 3363344), (8, 2102090), (10, 1681672), (16, 1051045), (20, 840836), (40, 420418), (80, 210209)]