1280852800

素因数分解:

$2^6\times 5^2\times {\mathrm{800533}}^1$

素因数の和:800555

約数の個数: 42

約数和(自身を含む): 3151702358

約数和(自身を除く): 1870849558

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 800533, 1601066, 3202132, 4002665, 6404264, 8005330, 12808528, 16010660, 20013325, 25617056, 32021320, 40026650, 51234112, 64042640, 80053300, 128085280, 160106600, 256170560, 320213200, 640426400, 1280852800]

約数ペア:

[(1, 1280852800), (2, 640426400), (4, 320213200), (5, 256170560), (8, 160106600), (10, 128085280), (16, 80053300), (20, 64042640), (25, 51234112), (32, 40026650), (40, 32021320), (50, 25617056), (64, 20013325), (80, 16010660), (100, 12808528), (160, 8005330), (200, 6404264), (320, 4002665), (400, 3202132), (800, 1601066), (1600, 800533)]