20438973

素因数分解:

$3^6\times {\mathrm{23}}^2\times {\mathrm{53}}^1$

素因数の和:117

約数の個数: 42

約数和(自身を含む): 32639166

約数和(自身を除く): 12200193

約数列:

[1, 3, 9, 23, 27, 53, 69, 81, 159, 207, 243, 477, 529, 621, 729, 1219, 1431, 1587, 1863, 3657, 4293, 4761, 5589, 10971, 12879, 14283, 16767, 28037, 32913, 38637, 42849, 84111, 98739, 128547, 252333, 296217, 385641, 756999, 888651, 2270997, 6812991, 20438973]

約数ペア:

[(1, 20438973), (3, 6812991), (9, 2270997), (23, 888651), (27, 756999), (53, 385641), (69, 296217), (81, 252333), (159, 128547), (207, 98739), (243, 84111), (477, 42849), (529, 38637), (621, 32913), (729, 28037), (1219, 16767), (1431, 14283), (1587, 12879), (1863, 10971), (3657, 5589), (4293, 4761)]