20397916

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{9461}}^1$

素因数の和:9490

約数の個数: 36

約数和(自身を含む): 45304056

約数和(自身を除く): 24906140

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 77, 98, 154, 196, 308, 539, 1078, 2156, 9461, 18922, 37844, 66227, 104071, 132454, 208142, 264908, 416284, 463589, 728497, 927178, 1456994, 1854356, 2913988, 5099479, 10198958, 20397916]

約数ペア:

[(1, 20397916), (2, 10198958), (4, 5099479), (7, 2913988), (11, 1854356), (14, 1456994), (22, 927178), (28, 728497), (44, 463589), (49, 416284), (77, 264908), (98, 208142), (154, 132454), (196, 104071), (308, 66227), (539, 37844), (1078, 18922), (2156, 9461)]