19121920

素因数分解:

$2^8\times 5^1\times {\mathrm{14939}}^1$

素因数の和:14960

約数の個数: 36

約数和(自身を含む): 45806040

約数和(自身を除く): 26684120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 14939, 29878, 59756, 74695, 119512, 149390, 239024, 298780, 478048, 597560, 956096, 1195120, 1912192, 2390240, 3824384, 4780480, 9560960, 19121920]

約数ペア:

[(1, 19121920), (2, 9560960), (4, 4780480), (5, 3824384), (8, 2390240), (10, 1912192), (16, 1195120), (20, 956096), (32, 597560), (40, 478048), (64, 298780), (80, 239024), (128, 149390), (160, 119512), (256, 74695), (320, 59756), (640, 29878), (1280, 14939)]