19749009

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{3631}}^1$

素因数の和:3685

約数の個数: 24

約数和(自身を含む): 31467648

約数和(自身を除く): 11718639

約数列:

[1, 3, 7, 21, 37, 49, 111, 147, 259, 777, 1813, 3631, 5439, 10893, 25417, 76251, 134347, 177919, 403041, 533757, 940429, 2821287, 6583003, 19749009]

約数ペア:

[(1, 19749009), (3, 6583003), (7, 2821287), (21, 940429), (37, 533757), (49, 403041), (111, 177919), (147, 134347), (259, 76251), (777, 25417), (1813, 10893), (3631, 5439)]