16397540

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{19997}}^1$

素因数の和:20047

約数の個数: 24

約数和(自身を含む): 35276472

約数和(自身を除く): 18878932

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 19997, 39994, 79988, 99985, 199970, 399940, 819877, 1639754, 3279508, 4099385, 8198770, 16397540]

約数ペア:

[(1, 16397540), (2, 8198770), (4, 4099385), (5, 3279508), (10, 1639754), (20, 819877), (41, 399940), (82, 199970), (164, 99985), (205, 79988), (410, 39994), (820, 19997)]