20939968

素因数分解:

$2^6\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1087}}^1$

素因数の和:1149

約数の個数: 56

約数和(自身を含む): 48637952

約数和(自身を除く): 27697984

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 43, 56, 64, 86, 112, 172, 224, 301, 344, 448, 602, 688, 1087, 1204, 1376, 2174, 2408, 2752, 4348, 4816, 7609, 8696, 9632, 15218, 17392, 19264, 30436, 34784, 46741, 60872, 69568, 93482, 121744, 186964, 243488, 327187, 373928, 486976, 654374, 747856, 1308748, 1495712, 2617496, 2991424, 5234992, 10469984, 20939968]

約数ペア:

[(1, 20939968), (2, 10469984), (4, 5234992), (7, 2991424), (8, 2617496), (14, 1495712), (16, 1308748), (28, 747856), (32, 654374), (43, 486976), (56, 373928), (64, 327187), (86, 243488), (112, 186964), (172, 121744), (224, 93482), (301, 69568), (344, 60872), (448, 46741), (602, 34784), (688, 30436), (1087, 19264), (1204, 17392), (1376, 15218), (2174, 9632), (2408, 8696), (2752, 7609), (4348, 4816)]