20559188

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{1789}}^1$

素因数の和:1836

約数の個数: 36

約数和(自身を含む): 41273820

約数和(自身を除く): 20714632

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 169, 221, 338, 442, 676, 884, 1789, 2873, 3578, 5746, 7156, 11492, 23257, 30413, 46514, 60826, 93028, 121652, 302341, 395369, 604682, 790738, 1209364, 1581476, 5139797, 10279594, 20559188]

約数ペア:

[(1, 20559188), (2, 10279594), (4, 5139797), (13, 1581476), (17, 1209364), (26, 790738), (34, 604682), (52, 395369), (68, 302341), (169, 121652), (221, 93028), (338, 60826), (442, 46514), (676, 30413), (884, 23257), (1789, 11492), (2873, 7156), (3578, 5746)]