19985896

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{263}}^1$

素因数の和:358

約数の個数: 64

約数和(自身を含む): 45619200

約数和(自身を除く): 25633304

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 56, 59, 92, 118, 161, 184, 236, 263, 322, 413, 472, 526, 644, 826, 1052, 1288, 1357, 1652, 1841, 2104, 2714, 3304, 3682, 5428, 6049, 7364, 9499, 10856, 12098, 14728, 15517, 18998, 24196, 31034, 37996, 42343, 48392, 62068, 75992, 84686, 108619, 124136, 169372, 217238, 338744, 356891, 434476, 713782, 868952, 1427564, 2498237, 2855128, 4996474, 9992948, 19985896]

約数ペア:

[(1, 19985896), (2, 9992948), (4, 4996474), (7, 2855128), (8, 2498237), (14, 1427564), (23, 868952), (28, 713782), (46, 434476), (56, 356891), (59, 338744), (92, 217238), (118, 169372), (161, 124136), (184, 108619), (236, 84686), (263, 75992), (322, 62068), (413, 48392), (472, 42343), (526, 37996), (644, 31034), (826, 24196), (1052, 18998), (1288, 15517), (1357, 14728), (1652, 12098), (1841, 10856), (2104, 9499), (2714, 7364), (3304, 6049), (3682, 5428)]