15939651

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{439}}^1$

素因数の和:488

約数の個数: 48

約数和(自身を含む): 28089600

約数和(自身を除く): 12149949

約数列:

[1, 3, 7, 13, 19, 21, 39, 49, 57, 91, 133, 147, 247, 273, 399, 439, 637, 741, 931, 1317, 1729, 1911, 2793, 3073, 5187, 5707, 8341, 9219, 12103, 17121, 21511, 25023, 36309, 39949, 58387, 64533, 108433, 119847, 175161, 279643, 325299, 408709, 759031, 838929, 1226127, 2277093, 5313217, 15939651]

約数ペア:

[(1, 15939651), (3, 5313217), (7, 2277093), (13, 1226127), (19, 838929), (21, 759031), (39, 408709), (49, 325299), (57, 279643), (91, 175161), (133, 119847), (147, 108433), (247, 64533), (273, 58387), (399, 39949), (439, 36309), (637, 25023), (741, 21511), (931, 17121), (1317, 12103), (1729, 9219), (1911, 8341), (2793, 5707), (3073, 5187)]