18785020

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{421}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 41686848

約数和(自身を除く): 22901828

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 97, 115, 194, 230, 388, 421, 460, 485, 842, 970, 1684, 1940, 2105, 2231, 4210, 4462, 8420, 8924, 9683, 11155, 19366, 22310, 38732, 40837, 44620, 48415, 81674, 96830, 163348, 193660, 204185, 408370, 816740, 939251, 1878502, 3757004, 4696255, 9392510, 18785020]

約数ペア:

[(1, 18785020), (2, 9392510), (4, 4696255), (5, 3757004), (10, 1878502), (20, 939251), (23, 816740), (46, 408370), (92, 204185), (97, 193660), (115, 163348), (194, 96830), (230, 81674), (388, 48415), (421, 44620), (460, 40837), (485, 38732), (842, 22310), (970, 19366), (1684, 11155), (1940, 9683), (2105, 8924), (2231, 8420), (4210, 4462)]