20127575

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3643}}^1$

素因数の和:3683

約数の個数: 24

約数和(自身を含む): 28466928

約数和(自身を除く): 8339353

約数列:

[1, 5, 13, 17, 25, 65, 85, 221, 325, 425, 1105, 3643, 5525, 18215, 47359, 61931, 91075, 236795, 309655, 805103, 1183975, 1548275, 4025515, 20127575]

約数ペア:

[(1, 20127575), (5, 4025515), (13, 1548275), (17, 1183975), (25, 805103), (65, 309655), (85, 236795), (221, 91075), (325, 61931), (425, 47359), (1105, 18215), (3643, 5525)]