221472713

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{37}}^2\times {\mathrm{191}}^1$

素因数の和:294

約数の個数: 36

約数和(自身を含む): 287433216

約数和(自身を除く): 65960503

約数列:

[1, 7, 11, 37, 77, 121, 191, 259, 407, 847, 1337, 1369, 2101, 2849, 4477, 7067, 9583, 14707, 15059, 23111, 31339, 49469, 77737, 105413, 161777, 165649, 261479, 544159, 855107, 1159543, 1830353, 2876269, 5985749, 20133883, 31638959, 221472713]

約数ペア:

[(1, 221472713), (7, 31638959), (11, 20133883), (37, 5985749), (77, 2876269), (121, 1830353), (191, 1159543), (259, 855107), (407, 544159), (847, 261479), (1337, 165649), (1369, 161777), (2101, 105413), (2849, 77737), (4477, 49469), (7067, 31339), (9583, 23111), (14707, 15059)]