21308392

素因数分解:

$2^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{8849}}^1$

素因数の和:8905

約数の個数: 32

約数和(自身を含む): 46728000

約数和(自身を除く): 25419608

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 56, 86, 172, 301, 344, 602, 1204, 2408, 8849, 17698, 35396, 61943, 70792, 123886, 247772, 380507, 495544, 761014, 1522028, 2663549, 3044056, 5327098, 10654196, 21308392]

約数ペア:

[(1, 21308392), (2, 10654196), (4, 5327098), (7, 3044056), (8, 2663549), (14, 1522028), (28, 761014), (43, 495544), (56, 380507), (86, 247772), (172, 123886), (301, 70792), (344, 61943), (602, 35396), (1204, 17698), (2408, 8849)]