20268885

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{479}}^1$

素因数の和:538

約数の個数: 64

約数和(自身を含む): 41287680

約数和(自身を除く): 21018795

約数列:

[1, 3, 5, 7, 13, 15, 21, 31, 35, 39, 65, 91, 93, 105, 155, 195, 217, 273, 403, 455, 465, 479, 651, 1085, 1209, 1365, 1437, 2015, 2395, 2821, 3255, 3353, 6045, 6227, 7185, 8463, 10059, 14105, 14849, 16765, 18681, 31135, 42315, 43589, 44547, 50295, 74245, 93405, 103943, 130767, 193037, 217945, 222735, 311829, 519715, 579111, 653835, 965185, 1351259, 1559145, 2895555, 4053777, 6756295, 20268885]

約数ペア:

[(1, 20268885), (3, 6756295), (5, 4053777), (7, 2895555), (13, 1559145), (15, 1351259), (21, 965185), (31, 653835), (35, 579111), (39, 519715), (65, 311829), (91, 222735), (93, 217945), (105, 193037), (155, 130767), (195, 103943), (217, 93405), (273, 74245), (403, 50295), (455, 44547), (465, 43589), (479, 42315), (651, 31135), (1085, 18681), (1209, 16765), (1365, 14849), (1437, 14105), (2015, 10059), (2395, 8463), (2821, 7185), (3255, 6227), (3353, 6045)]