21702904

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{673}}^1$

素因数の和:847

約数の個数: 32

約数和(自身を含む): 42462000

約数和(自身を除く): 20759096

約数列:

[1, 2, 4, 8, 29, 58, 116, 139, 232, 278, 556, 673, 1112, 1346, 2692, 4031, 5384, 8062, 16124, 19517, 32248, 39034, 78068, 93547, 156136, 187094, 374188, 748376, 2712863, 5425726, 10851452, 21702904]

約数ペア:

[(1, 21702904), (2, 10851452), (4, 5425726), (8, 2712863), (29, 748376), (58, 374188), (116, 187094), (139, 156136), (232, 93547), (278, 78068), (556, 39034), (673, 32248), (1112, 19517), (1346, 16124), (2692, 8062), (4031, 5384)]