28356783

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{431}}^1$

素因数の和:695

約数の個数: 32

約数和(自身を含む): 46835712

約数和(自身を除く): 18478929

約数列:

[1, 3, 7, 13, 21, 39, 91, 241, 273, 431, 723, 1293, 1687, 3017, 3133, 5061, 5603, 9051, 9399, 16809, 21931, 39221, 65793, 103871, 117663, 311613, 727097, 1350323, 2181291, 4050969, 9452261, 28356783]

約数ペア:

[(1, 28356783), (3, 9452261), (7, 4050969), (13, 2181291), (21, 1350323), (39, 727097), (91, 311613), (241, 117663), (273, 103871), (431, 65793), (723, 39221), (1293, 21931), (1687, 16809), (3017, 9399), (3133, 9051), (5061, 5603)]