281429440

素因数分解:

$2^6\times 5^1\times {\mathrm{331}}^1\times {\mathrm{2657}}^1$

素因数の和:3005

約数の個数: 56

約数和(自身を含む): 672431472

約数和(自身を除く): 391002032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 331, 662, 1324, 1655, 2648, 2657, 3310, 5296, 5314, 6620, 10592, 10628, 13240, 13285, 21184, 21256, 26480, 26570, 42512, 52960, 53140, 85024, 105920, 106280, 170048, 212560, 425120, 850240, 879467, 1758934, 3517868, 4397335, 7035736, 8794670, 14071472, 17589340, 28142944, 35178680, 56285888, 70357360, 140714720, 281429440]

約数ペア:

[(1, 281429440), (2, 140714720), (4, 70357360), (5, 56285888), (8, 35178680), (10, 28142944), (16, 17589340), (20, 14071472), (32, 8794670), (40, 7035736), (64, 4397335), (80, 3517868), (160, 1758934), (320, 879467), (331, 850240), (662, 425120), (1324, 212560), (1655, 170048), (2648, 106280), (2657, 105920), (3310, 85024), (5296, 53140), (5314, 52960), (6620, 42512), (10592, 26570), (10628, 26480), (13240, 21256), (13285, 21184)]