2045187921

素因数分解:

$3^1\times 7^3\times {\mathrm{1987549}}^1$

素因数の和:1987573

約数の個数: 16

約数和(自身を含む): 3180080000

約数和(自身を除く): 1134892079

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 1987549, 5962647, 13912843, 41738529, 97389901, 292169703, 681729307, 2045187921]

約数ペア:

[(1, 2045187921), (3, 681729307), (7, 292169703), (21, 97389901), (49, 41738529), (147, 13912843), (343, 5962647), (1029, 1987549)]