16987940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{20717}}^1$

素因数の和:20767

約数の個数: 24

約数和(自身を含む): 36546552

約数和(自身を除く): 19558612

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 20717, 41434, 82868, 103585, 207170, 414340, 849397, 1698794, 3397588, 4246985, 8493970, 16987940]

約数ペア:

[(1, 16987940), (2, 8493970), (4, 4246985), (5, 3397588), (10, 1698794), (20, 849397), (41, 414340), (82, 207170), (164, 103585), (205, 82868), (410, 41434), (820, 20717)]