21879099

素因数分解:

$3^3\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{181}}^1$

素因数の和:249

約数の個数: 48

約数和(自身を含む): 36793120

約数和(自身を除く): 14914021

約数列:

[1, 3, 9, 11, 27, 33, 37, 99, 111, 121, 181, 297, 333, 363, 407, 543, 999, 1089, 1221, 1629, 1991, 3267, 3663, 4477, 4887, 5973, 6697, 10989, 13431, 17919, 20091, 21901, 40293, 53757, 60273, 65703, 73667, 120879, 180819, 197109, 221001, 591327, 663003, 810337, 1989009, 2431011, 7293033, 21879099]

約数ペア:

[(1, 21879099), (3, 7293033), (9, 2431011), (11, 1989009), (27, 810337), (33, 663003), (37, 591327), (99, 221001), (111, 197109), (121, 180819), (181, 120879), (297, 73667), (333, 65703), (363, 60273), (407, 53757), (543, 40293), (999, 21901), (1089, 20091), (1221, 17919), (1629, 13431), (1991, 10989), (3267, 6697), (3663, 5973), (4477, 4887)]