20401479

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{443}}^1$

素因数の和:516

約数の個数: 48

約数和(自身を含む): 36571392

約数和(自身を除く): 16169913

約数列:

[1, 3, 7, 9, 17, 21, 43, 51, 63, 119, 129, 153, 301, 357, 387, 443, 731, 903, 1071, 1329, 2193, 2709, 3101, 3987, 5117, 6579, 7531, 9303, 15351, 19049, 22593, 27909, 46053, 52717, 57147, 67779, 133343, 158151, 171441, 323833, 400029, 474453, 971499, 1200087, 2266831, 2914497, 6800493, 20401479]

約数ペア:

[(1, 20401479), (3, 6800493), (7, 2914497), (9, 2266831), (17, 1200087), (21, 971499), (43, 474453), (51, 400029), (63, 323833), (119, 171441), (129, 158151), (153, 133343), (301, 67779), (357, 57147), (387, 52717), (443, 46053), (731, 27909), (903, 22593), (1071, 19049), (1329, 15351), (2193, 9303), (2709, 7531), (3101, 6579), (3987, 5117)]