19904528

素因数分解:

$2^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{4133}}^1$

素因数の和:4191

約数の個数: 40

約数和(自身を含む): 45110208

約数和(自身を除く): 25205680

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 43, 56, 86, 112, 172, 301, 344, 602, 688, 1204, 2408, 4133, 4816, 8266, 16532, 28931, 33064, 57862, 66128, 115724, 177719, 231448, 355438, 462896, 710876, 1244033, 1421752, 2488066, 2843504, 4976132, 9952264, 19904528]

約数ペア:

[(1, 19904528), (2, 9952264), (4, 4976132), (7, 2843504), (8, 2488066), (14, 1421752), (16, 1244033), (28, 710876), (43, 462896), (56, 355438), (86, 231448), (112, 177719), (172, 115724), (301, 66128), (344, 57862), (602, 33064), (688, 28931), (1204, 16532), (2408, 8266), (4133, 4816)]