8172800

素因数分解:

$2^8\times 5^2\times {\mathrm{1277}}^1$

素因数の和:1303

約数の個数: 54

約数和(自身を含む): 20244798

約数和(自身を除く): 12071998

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1277, 1280, 1600, 2554, 3200, 5108, 6385, 6400, 10216, 12770, 20432, 25540, 31925, 40864, 51080, 63850, 81728, 102160, 127700, 163456, 204320, 255400, 326912, 408640, 510800, 817280, 1021600, 1634560, 2043200, 4086400, 8172800]

約数ペア:

[(1, 8172800), (2, 4086400), (4, 2043200), (5, 1634560), (8, 1021600), (10, 817280), (16, 510800), (20, 408640), (25, 326912), (32, 255400), (40, 204320), (50, 163456), (64, 127700), (80, 102160), (100, 81728), (128, 63850), (160, 51080), (200, 40864), (256, 31925), (320, 25540), (400, 20432), (640, 12770), (800, 10216), (1277, 6400), (1280, 6385), (1600, 5108), (2554, 3200)]