18919827

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{3989}}^1$

素因数の和:4043

約数の個数: 24

約数和(自身を含む): 29877120

約数和(自身を除く): 10957293

約数列:

[1, 3, 9, 17, 31, 51, 93, 153, 279, 527, 1581, 3989, 4743, 11967, 35901, 67813, 123659, 203439, 370977, 610317, 1112931, 2102203, 6306609, 18919827]

約数ペア:

[(1, 18919827), (3, 6306609), (9, 2102203), (17, 1112931), (31, 610317), (51, 370977), (93, 203439), (153, 123659), (279, 67813), (527, 35901), (1581, 11967), (3989, 4743)]