257978960

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{1907}}^1$

素因数の和:2028

約数の個数: 80

約数和(自身を含む): 638798400

約数和(自身を除く): 380819440

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 89, 95, 152, 178, 190, 304, 356, 380, 445, 712, 760, 890, 1424, 1520, 1691, 1780, 1907, 3382, 3560, 3814, 6764, 7120, 7628, 8455, 9535, 13528, 15256, 16910, 19070, 27056, 30512, 33820, 36233, 38140, 67640, 72466, 76280, 135280, 144932, 152560, 169723, 181165, 289864, 339446, 362330, 579728, 678892, 724660, 848615, 1357784, 1449320, 1697230, 2715568, 2898640, 3224737, 3394460, 6449474, 6788920, 12898948, 13577840, 16123685, 25797896, 32247370, 51595792, 64494740, 128989480, 257978960]

約数ペア:

[(1, 257978960), (2, 128989480), (4, 64494740), (5, 51595792), (8, 32247370), (10, 25797896), (16, 16123685), (19, 13577840), (20, 12898948), (38, 6788920), (40, 6449474), (76, 3394460), (80, 3224737), (89, 2898640), (95, 2715568), (152, 1697230), (178, 1449320), (190, 1357784), (304, 848615), (356, 724660), (380, 678892), (445, 579728), (712, 362330), (760, 339446), (890, 289864), (1424, 181165), (1520, 169723), (1691, 152560), (1780, 144932), (1907, 135280), (3382, 76280), (3560, 72466), (3814, 67640), (6764, 38140), (7120, 36233), (7628, 33820), (8455, 30512), (9535, 27056), (13528, 19070), (15256, 16910)]