221279135

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{19819}}^1$

素因数の和:19871

約数の個数: 32

約数和(自身を含む): 342489600

約数和(自身を除く): 121210465

約数列:

[1, 5, 7, 11, 29, 35, 55, 77, 145, 203, 319, 385, 1015, 1595, 2233, 11165, 19819, 99095, 138733, 218009, 574751, 693665, 1090045, 1526063, 2873755, 4023257, 6322261, 7630315, 20116285, 31611305, 44255827, 221279135]

約数ペア:

[(1, 221279135), (5, 44255827), (7, 31611305), (11, 20116285), (29, 7630315), (35, 6322261), (55, 4023257), (77, 2873755), (145, 1526063), (203, 1090045), (319, 693665), (385, 574751), (1015, 218009), (1595, 138733), (2233, 99095), (11165, 19819)]