20718992

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{6379}}^1$

素因数の和:6423

約数の個数: 40

約数和(自身を含む): 47467200

約数和(自身を除く): 26748208

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 56, 58, 112, 116, 203, 232, 406, 464, 812, 1624, 3248, 6379, 12758, 25516, 44653, 51032, 89306, 102064, 178612, 184991, 357224, 369982, 714448, 739964, 1294937, 1479928, 2589874, 2959856, 5179748, 10359496, 20718992]

約数ペア:

[(1, 20718992), (2, 10359496), (4, 5179748), (7, 2959856), (8, 2589874), (14, 1479928), (16, 1294937), (28, 739964), (29, 714448), (56, 369982), (58, 357224), (112, 184991), (116, 178612), (203, 102064), (232, 89306), (406, 51032), (464, 44653), (812, 25516), (1624, 12758), (3248, 6379)]