21559923

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{587}}^1$

素因数の和:664

約数の個数: 48

約数和(自身を含む): 39626496

約数和(自身を除く): 18066573

約数列:

[1, 3, 7, 9, 11, 21, 33, 53, 63, 77, 99, 159, 231, 371, 477, 583, 587, 693, 1113, 1749, 1761, 3339, 4081, 4109, 5247, 5283, 6457, 12243, 12327, 19371, 31111, 36729, 36981, 45199, 58113, 93333, 135597, 217777, 279999, 342221, 406791, 653331, 1026663, 1959993, 2395547, 3079989, 7186641, 21559923]

約数ペア:

[(1, 21559923), (3, 7186641), (7, 3079989), (9, 2395547), (11, 1959993), (21, 1026663), (33, 653331), (53, 406791), (63, 342221), (77, 279999), (99, 217777), (159, 135597), (231, 93333), (371, 58113), (477, 45199), (583, 36981), (587, 36729), (693, 31111), (1113, 19371), (1749, 12327), (1761, 12243), (3339, 6457), (4081, 5283), (4109, 5247)]