20765885

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{499}}^1$

素因数の和:581

約数の個数: 32

約数和(自身を含む): 30240000

約数和(自身を除く): 9474115

約数列:

[1, 5, 7, 29, 35, 41, 145, 203, 205, 287, 499, 1015, 1189, 1435, 2495, 3493, 5945, 8323, 14471, 17465, 20459, 41615, 72355, 101297, 102295, 143213, 506485, 593311, 716065, 2966555, 4153177, 20765885]

約数ペア:

[(1, 20765885), (5, 4153177), (7, 2966555), (29, 716065), (35, 593311), (41, 506485), (145, 143213), (203, 102295), (205, 101297), (287, 72355), (499, 41615), (1015, 20459), (1189, 17465), (1435, 14471), (2495, 8323), (3493, 5945)]