20509460

素因数分解:

$2^2\times 5^1\times {\mathrm{829}}^1\times {\mathrm{1237}}^1$

素因数の和:2075

約数の個数: 24

約数和(自身を含む): 43156680

約数和(自身を除く): 22647220

約数列:

[1, 2, 4, 5, 10, 20, 829, 1237, 1658, 2474, 3316, 4145, 4948, 6185, 8290, 12370, 16580, 24740, 1025473, 2050946, 4101892, 5127365, 10254730, 20509460]

約数ペア:

[(1, 20509460), (2, 10254730), (4, 5127365), (5, 4101892), (10, 2050946), (20, 1025473), (829, 24740), (1237, 16580), (1658, 12370), (2474, 8290), (3316, 6185), (4145, 4948)]