28876827

素因数分解:

$3^1\times 7^4\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:261

約数の個数: 40

約数和(自身を含む): 47504960

約数和(自身を除く): 18628133

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 211, 343, 399, 633, 931, 1029, 1477, 2401, 2793, 4009, 4431, 6517, 7203, 10339, 12027, 19551, 28063, 31017, 45619, 72373, 84189, 136857, 196441, 217119, 506611, 589323, 1375087, 1519833, 4125261, 9625609, 28876827]

約数ペア:

[(1, 28876827), (3, 9625609), (7, 4125261), (19, 1519833), (21, 1375087), (49, 589323), (57, 506611), (133, 217119), (147, 196441), (211, 136857), (343, 84189), (399, 72373), (633, 45619), (931, 31017), (1029, 28063), (1477, 19551), (2401, 12027), (2793, 10339), (4009, 7203), (4431, 6517)]