18271953

素因数分解:

$3^3\times 7^3\times {\mathrm{1973}}^1$

素因数の和:2003

約数の個数: 32

約数和(自身を含む): 31584000

約数和(自身を除く): 13312047

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 343, 441, 1029, 1323, 1973, 3087, 5919, 9261, 13811, 17757, 41433, 53271, 96677, 124299, 290031, 372897, 676739, 870093, 2030217, 2610279, 6090651, 18271953]

約数ペア:

[(1, 18271953), (3, 6090651), (7, 2610279), (9, 2030217), (21, 870093), (27, 676739), (49, 372897), (63, 290031), (147, 124299), (189, 96677), (343, 53271), (441, 41433), (1029, 17757), (1323, 13811), (1973, 9261), (3087, 5919)]