20706028

素因数分解:

$2^2\times 7^2\times {\mathrm{89}}^1\times {\mathrm{1187}}^1$

素因数の和:1294

約数の個数: 36

約数和(自身を含む): 42661080

約数和(自身を除く): 21955052

約数列:

[1, 2, 4, 7, 14, 28, 49, 89, 98, 178, 196, 356, 623, 1187, 1246, 2374, 2492, 4361, 4748, 8309, 8722, 16618, 17444, 33236, 58163, 105643, 116326, 211286, 232652, 422572, 739501, 1479002, 2958004, 5176507, 10353014, 20706028]

約数ペア:

[(1, 20706028), (2, 10353014), (4, 5176507), (7, 2958004), (14, 1479002), (28, 739501), (49, 422572), (89, 232652), (98, 211286), (178, 116326), (196, 105643), (356, 58163), (623, 33236), (1187, 17444), (1246, 16618), (2374, 8722), (2492, 8309), (4361, 4748)]