18915291

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{461}}^1$

素因数の和:611

約数の個数: 24

約数和(自身を含む): 28252224

約数和(自身を除く): 9336933

約数列:

[1, 3, 9, 47, 97, 141, 291, 423, 461, 873, 1383, 4149, 4559, 13677, 21667, 41031, 44717, 65001, 134151, 195003, 402453, 2101699, 6305097, 18915291]

約数ペア:

[(1, 18915291), (3, 6305097), (9, 2101699), (47, 402453), (97, 195003), (141, 134151), (291, 65001), (423, 44717), (461, 41031), (873, 21667), (1383, 13677), (4149, 4559)]