20002545

素因数分解:

$3^5\times 5^1\times {\mathrm{101}}^1\times {\mathrm{163}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 36533952

約数和(自身を除く): 16531407

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 101, 135, 163, 243, 303, 405, 489, 505, 815, 909, 1215, 1467, 1515, 2445, 2727, 4401, 4545, 7335, 8181, 13203, 13635, 16463, 22005, 24543, 39609, 40905, 49389, 66015, 82315, 122715, 148167, 198045, 246945, 444501, 740835, 1333503, 2222505, 4000509, 6667515, 20002545]

約数ペア:

[(1, 20002545), (3, 6667515), (5, 4000509), (9, 2222505), (15, 1333503), (27, 740835), (45, 444501), (81, 246945), (101, 198045), (135, 148167), (163, 122715), (243, 82315), (303, 66015), (405, 49389), (489, 40905), (505, 39609), (815, 24543), (909, 22005), (1215, 16463), (1467, 13635), (1515, 13203), (2445, 8181), (2727, 7335), (4401, 4545)]