20811180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26681}}^1$

素因数の和:26706

約数の個数: 48

約数和(自身を含む): 62756064

約数和(自身を除く): 41944884

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 26681, 53362, 80043, 106724, 133405, 160086, 266810, 320172, 346853, 400215, 533620, 693706, 800430, 1040559, 1387412, 1600860, 1734265, 2081118, 3468530, 4162236, 5202795, 6937060, 10405590, 20811180]

約数ペア:

[(1, 20811180), (2, 10405590), (3, 6937060), (4, 5202795), (5, 4162236), (6, 3468530), (10, 2081118), (12, 1734265), (13, 1600860), (15, 1387412), (20, 1040559), (26, 800430), (30, 693706), (39, 533620), (52, 400215), (60, 346853), (65, 320172), (78, 266810), (130, 160086), (156, 133405), (195, 106724), (260, 80043), (390, 53362), (780, 26681)]