221245255

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{521}}^1\times {\mathrm{1103}}^1$

素因数の和:1647

約数の個数: 32

約数和(自身を含む): 331941888

約数和(自身を除く): 110696633

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 521, 1103, 2605, 3647, 5515, 5731, 7721, 12133, 18235, 28655, 38605, 40117, 60665, 84931, 200585, 424655, 574663, 2873315, 4022641, 6321293, 20113205, 31606465, 44249051, 221245255]

約数ペア:

[(1, 221245255), (5, 44249051), (7, 31606465), (11, 20113205), (35, 6321293), (55, 4022641), (77, 2873315), (385, 574663), (521, 424655), (1103, 200585), (2605, 84931), (3647, 60665), (5515, 40117), (5731, 38605), (7721, 28655), (12133, 18235)]