628468480

素因数分解:

$2^8\times 5^1\times {\mathrm{490991}}^1$

素因数の和:491012

約数の個数: 36

約数和(自身を含む): 1505381472

約数和(自身を除く): 876912992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 490991, 981982, 1963964, 2454955, 3927928, 4909910, 7855856, 9819820, 15711712, 19639640, 31423424, 39279280, 62846848, 78558560, 125693696, 157117120, 314234240, 628468480]

約数ペア:

[(1, 628468480), (2, 314234240), (4, 157117120), (5, 125693696), (8, 78558560), (10, 62846848), (16, 39279280), (20, 31423424), (32, 19639640), (40, 15711712), (64, 9819820), (80, 7855856), (128, 4909910), (160, 3927928), (256, 2454955), (320, 1963964), (640, 981982), (1280, 490991)]