205609280

素因数分解:

$2^6\times 5^1\times {\mathrm{642529}}^1$

素因数の和:642546

約数の個数: 28

約数和(自身を含む): 489607860

約数和(自身を除く): 283998580

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 642529, 1285058, 2570116, 3212645, 5140232, 6425290, 10280464, 12850580, 20560928, 25701160, 41121856, 51402320, 102804640, 205609280]

約数ペア:

[(1, 205609280), (2, 102804640), (4, 51402320), (5, 41121856), (8, 25701160), (10, 20560928), (16, 12850580), (20, 10280464), (32, 6425290), (40, 5140232), (64, 3212645), (80, 2570116), (160, 1285058), (320, 642529)]