20389077

素因数分解:

$3^4\times {\mathrm{151}}^1\times {\mathrm{1667}}^1$

素因数の和:1830

約数の個数: 20

約数和(自身を含む): 30677856

約数和(自身を除く): 10288779

約数列:

[1, 3, 9, 27, 81, 151, 453, 1359, 1667, 4077, 5001, 12231, 15003, 45009, 135027, 251717, 755151, 2265453, 6796359, 20389077]

約数ペア:

[(1, 20389077), (3, 6796359), (9, 2265453), (27, 755151), (81, 251717), (151, 135027), (453, 45009), (1359, 15003), (1667, 12231), (4077, 5001)]