28908280

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{17627}}^1$

素因数の和:17679

約数の個数: 32

約数和(自身を含む): 66633840

約数和(自身を除く): 37725560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 17627, 35254, 70508, 88135, 141016, 176270, 352540, 705080, 722707, 1445414, 2890828, 3613535, 5781656, 7227070, 14454140, 28908280]

約数ペア:

[(1, 28908280), (2, 14454140), (4, 7227070), (5, 5781656), (8, 3613535), (10, 2890828), (20, 1445414), (40, 722707), (41, 705080), (82, 352540), (164, 176270), (205, 141016), (328, 88135), (410, 70508), (820, 35254), (1640, 17627)]