28258256

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{1319}}^1$

素因数の和:1443

約数の個数: 40

約数和(自身を含む): 59579520

約数和(自身を除く): 31321264

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 103, 104, 206, 208, 412, 824, 1319, 1339, 1648, 2638, 2678, 5276, 5356, 10552, 10712, 17147, 21104, 21424, 34294, 68588, 135857, 137176, 271714, 274352, 543428, 1086856, 1766141, 2173712, 3532282, 7064564, 14129128, 28258256]

約数ペア:

[(1, 28258256), (2, 14129128), (4, 7064564), (8, 3532282), (13, 2173712), (16, 1766141), (26, 1086856), (52, 543428), (103, 274352), (104, 271714), (206, 137176), (208, 135857), (412, 68588), (824, 34294), (1319, 21424), (1339, 21104), (1648, 17147), (2638, 10712), (2678, 10552), (5276, 5356)]