26978575

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 40309920

約数和(自身を除く): 13331345

約数列:

[1, 5, 13, 17, 19, 25, 65, 85, 95, 221, 247, 257, 323, 325, 425, 475, 1105, 1235, 1285, 1615, 3341, 4199, 4369, 4883, 5525, 6175, 6425, 8075, 16705, 20995, 21845, 24415, 56797, 63479, 83011, 83525, 104975, 109225, 122075, 283985, 317395, 415055, 1079143, 1419925, 1586975, 2075275, 5395715, 26978575]

約数ペア:

[(1, 26978575), (5, 5395715), (13, 2075275), (17, 1586975), (19, 1419925), (25, 1079143), (65, 415055), (85, 317395), (95, 283985), (221, 122075), (247, 109225), (257, 104975), (323, 83525), (325, 83011), (425, 63479), (475, 56797), (1105, 24415), (1235, 21845), (1285, 20995), (1615, 16705), (3341, 8075), (4199, 6425), (4369, 6175), (4883, 5525)]