1989009

素因数分解:

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

素因数の和:238

約数の個数: 32

約数和(自身を含む): 3319680

約数和(自身を除く): 1330671

約数列:

[1, 3, 9, 11, 27, 33, 37, 99, 111, 181, 297, 333, 407, 543, 999, 1221, 1629, 1991, 3663, 4887, 5973, 6697, 10989, 17919, 20091, 53757, 60273, 73667, 180819, 221001, 663003, 1989009]

約数ペア:

[(1, 1989009), (3, 663003), (9, 221001), (11, 180819), (27, 73667), (33, 60273), (37, 53757), (99, 20091), (111, 17919), (181, 10989), (297, 6697), (333, 5973), (407, 4887), (543, 3663), (999, 1991), (1221, 1629)]