81988780

素因数分解:

$2^2\times 5^1\times {\mathrm{827}}^1\times {\mathrm{4957}}^1$

素因数の和:5793

約数の個数: 24

約数和(自身を含む): 172419408

約数和(自身を除く): 90430628

約数列:

[1, 2, 4, 5, 10, 20, 827, 1654, 3308, 4135, 4957, 8270, 9914, 16540, 19828, 24785, 49570, 99140, 4099439, 8198878, 16397756, 20497195, 40994390, 81988780]

約数ペア:

[(1, 81988780), (2, 40994390), (4, 20497195), (5, 16397756), (10, 8198878), (20, 4099439), (827, 99140), (1654, 49570), (3308, 24785), (4135, 19828), (4957, 16540), (8270, 9914)]