19900996857

素因数分解:

$3^2\times 7^3\times {\mathrm{6446711}}^1$

素因数の和:6446738

約数の個数: 24

約数和(自身を含む): 33522902400

約数和(自身を除く): 13621905543

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 6446711, 19340133, 45126977, 58020399, 135380931, 315888839, 406142793, 947666517, 2211221873, 2842999551, 6633665619, 19900996857]

約数ペア:

[(1, 19900996857), (3, 6633665619), (7, 2842999551), (9, 2211221873), (21, 947666517), (49, 406142793), (63, 315888839), (147, 135380931), (343, 58020399), (441, 45126977), (1029, 19340133), (3087, 6446711)]