28756078

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:181

約数の個数: 48

約数和(自身を含む): 51060240

約数和(自身を除く): 22304162

約数列:

[1, 2, 13, 17, 26, 34, 43, 86, 89, 178, 221, 289, 442, 559, 578, 731, 1118, 1157, 1462, 1513, 2314, 3026, 3757, 3827, 7514, 7654, 9503, 12427, 19006, 19669, 24854, 25721, 39338, 49751, 51442, 65059, 99502, 130118, 161551, 323102, 334373, 668746, 845767, 1106003, 1691534, 2212006, 14378039, 28756078]

約数ペア:

[(1, 28756078), (2, 14378039), (13, 2212006), (17, 1691534), (26, 1106003), (34, 845767), (43, 668746), (86, 334373), (89, 323102), (178, 161551), (221, 130118), (289, 99502), (442, 65059), (559, 51442), (578, 49751), (731, 39338), (1118, 25721), (1157, 24854), (1462, 19669), (1513, 19006), (2314, 12427), (3026, 9503), (3757, 7654), (3827, 7514)]