21344512

素因数分解:

$2^8\times 7^1\times {\mathrm{43}}^1\times {\mathrm{277}}^1$

素因数の和:343

約数の個数: 72

約数和(自身を含む): 50004416

約数和(自身を除く): 28659904

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 43, 56, 64, 86, 112, 128, 172, 224, 256, 277, 301, 344, 448, 554, 602, 688, 896, 1108, 1204, 1376, 1792, 1939, 2216, 2408, 2752, 3878, 4432, 4816, 5504, 7756, 8864, 9632, 11008, 11911, 15512, 17728, 19264, 23822, 31024, 35456, 38528, 47644, 62048, 70912, 77056, 83377, 95288, 124096, 166754, 190576, 248192, 333508, 381152, 496384, 667016, 762304, 1334032, 1524608, 2668064, 3049216, 5336128, 10672256, 21344512]

約数ペア:

[(1, 21344512), (2, 10672256), (4, 5336128), (7, 3049216), (8, 2668064), (14, 1524608), (16, 1334032), (28, 762304), (32, 667016), (43, 496384), (56, 381152), (64, 333508), (86, 248192), (112, 190576), (128, 166754), (172, 124096), (224, 95288), (256, 83377), (277, 77056), (301, 70912), (344, 62048), (448, 47644), (554, 38528), (602, 35456), (688, 31024), (896, 23822), (1108, 19264), (1204, 17728), (1376, 15512), (1792, 11911), (1939, 11008), (2216, 9632), (2408, 8864), (2752, 7756), (3878, 5504), (4432, 4816)]