18037540

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{21997}}^1$

素因数の和:22047

約数の個数: 24

約数和(自身を含む): 38804472

約数和(自身を除く): 20766932

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 21997, 43994, 87988, 109985, 219970, 439940, 901877, 1803754, 3607508, 4509385, 9018770, 18037540]

約数ペア:

[(1, 18037540), (2, 9018770), (4, 4509385), (5, 3607508), (10, 1803754), (20, 901877), (41, 439940), (82, 219970), (164, 109985), (205, 87988), (410, 43994), (820, 21997)]