20286800

素因数分解:

$2^4\times 5^2\times {\mathrm{41}}^1\times {\mathrm{1237}}^1$

素因数の和:1296

約数の個数: 60

約数和(自身を含む): 49968156

約数和(自身を除く): 29681356

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 41, 50, 80, 82, 100, 164, 200, 205, 328, 400, 410, 656, 820, 1025, 1237, 1640, 2050, 2474, 3280, 4100, 4948, 6185, 8200, 9896, 12370, 16400, 19792, 24740, 30925, 49480, 50717, 61850, 98960, 101434, 123700, 202868, 247400, 253585, 405736, 494800, 507170, 811472, 1014340, 1267925, 2028680, 2535850, 4057360, 5071700, 10143400, 20286800]

約数ペア:

[(1, 20286800), (2, 10143400), (4, 5071700), (5, 4057360), (8, 2535850), (10, 2028680), (16, 1267925), (20, 1014340), (25, 811472), (40, 507170), (41, 494800), (50, 405736), (80, 253585), (82, 247400), (100, 202868), (164, 123700), (200, 101434), (205, 98960), (328, 61850), (400, 50717), (410, 49480), (656, 30925), (820, 24740), (1025, 19792), (1237, 16400), (1640, 12370), (2050, 9896), (2474, 8200), (3280, 6185), (4100, 4948)]