21974337

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{857}}^1$

素因数の和:918

約数の個数: 48

約数和(自身を含む): 40689792

約数和(自身を除く): 18715455

約数列:

[1, 3, 7, 9, 11, 21, 33, 37, 63, 77, 99, 111, 231, 259, 333, 407, 693, 777, 857, 1221, 2331, 2571, 2849, 3663, 5999, 7713, 8547, 9427, 17997, 25641, 28281, 31709, 53991, 65989, 84843, 95127, 197967, 221963, 285381, 348799, 593901, 665889, 1046397, 1997667, 2441593, 3139191, 7324779, 21974337]

約数ペア:

[(1, 21974337), (3, 7324779), (7, 3139191), (9, 2441593), (11, 1997667), (21, 1046397), (33, 665889), (37, 593901), (63, 348799), (77, 285381), (99, 221963), (111, 197967), (231, 95127), (259, 84843), (333, 65989), (407, 53991), (693, 31709), (777, 28281), (857, 25641), (1221, 17997), (2331, 9427), (2571, 8547), (2849, 7713), (3663, 5999)]