205651640

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{53003}}^1$

素因数の和:53111

約数の個数: 32

約数和(自身を含む): 467495280

約数和(自身を除く): 261843640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 53003, 106006, 212012, 265015, 424024, 530030, 1060060, 2120120, 5141291, 10282582, 20565164, 25706455, 41130328, 51412910, 102825820, 205651640]

約数ペア:

[(1, 205651640), (2, 102825820), (4, 51412910), (5, 41130328), (8, 25706455), (10, 20565164), (20, 10282582), (40, 5141291), (97, 2120120), (194, 1060060), (388, 530030), (485, 424024), (776, 265015), (970, 212012), (1940, 106006), (3880, 53003)]