280168960

素因数分解:

$2^9\times 5^1\times {\mathrm{109441}}^1$

素因数の和:109464

約数の個数: 40

約数和(自身を含む): 671754996

約数和(自身を除く): 391586036

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 109441, 218882, 437764, 547205, 875528, 1094410, 1751056, 2188820, 3502112, 4377640, 7004224, 8755280, 14008448, 17510560, 28016896, 35021120, 56033792, 70042240, 140084480, 280168960]

約数ペア:

[(1, 280168960), (2, 140084480), (4, 70042240), (5, 56033792), (8, 35021120), (10, 28016896), (16, 17510560), (20, 14008448), (32, 8755280), (40, 7004224), (64, 4377640), (80, 3502112), (128, 2188820), (160, 1751056), (256, 1094410), (320, 875528), (512, 547205), (640, 437764), (1280, 218882), (2560, 109441)]