640028208

素因数分解:

$2^4\times 3^1\times {\mathrm{13333921}}^1$

素因数の和:13333932

約数の個数: 20

約数和(自身を含む): 1653406328

約数和(自身を除く): 1013378120

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 13333921, 26667842, 40001763, 53335684, 80003526, 106671368, 160007052, 213342736, 320014104, 640028208]

約数ペア:

[(1, 640028208), (2, 320014104), (3, 213342736), (4, 160007052), (6, 106671368), (8, 80003526), (12, 53335684), (16, 40001763), (24, 26667842), (48, 13333921)]