28908999

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{281}}^1$

素因数の和:388

約数の個数: 48

約数和(自身を含む): 50678784

約数和(自身を除く): 21769785

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 71, 161, 207, 213, 281, 483, 497, 639, 843, 1449, 1491, 1633, 1967, 2529, 4473, 4899, 5901, 6463, 11431, 14697, 17703, 19389, 19951, 34293, 45241, 58167, 59853, 102879, 135723, 139657, 179559, 407169, 418971, 458873, 1256913, 1376619, 3212111, 4129857, 9636333, 28908999]

約数ペア:

[(1, 28908999), (3, 9636333), (7, 4129857), (9, 3212111), (21, 1376619), (23, 1256913), (63, 458873), (69, 418971), (71, 407169), (161, 179559), (207, 139657), (213, 135723), (281, 102879), (483, 59853), (497, 58167), (639, 45241), (843, 34293), (1449, 19951), (1491, 19389), (1633, 17703), (1967, 14697), (2529, 11431), (4473, 6463), (4899, 5901)]