21740030

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{1879}}^1$

素因数の和:1988

約数の個数: 32

約数和(自身を含む): 42638400

約数和(自身を除く): 20898370

約数列:

[1, 2, 5, 10, 13, 26, 65, 89, 130, 178, 445, 890, 1157, 1879, 2314, 3758, 5785, 9395, 11570, 18790, 24427, 48854, 122135, 167231, 244270, 334462, 836155, 1672310, 2174003, 4348006, 10870015, 21740030]

約数ペア:

[(1, 21740030), (2, 10870015), (5, 4348006), (10, 2174003), (13, 1672310), (26, 836155), (65, 334462), (89, 244270), (130, 167231), (178, 122135), (445, 48854), (890, 24427), (1157, 18790), (1879, 11570), (2314, 9395), (3758, 5785)]