21051088

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{69247}}^1$

素因数の和:69274

約数の個数: 20

約数和(自身を含む): 42933760

約数和(自身を除く): 21882672

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 69247, 138494, 276988, 553976, 1107952, 1315693, 2631386, 5262772, 10525544, 21051088]

約数ペア:

[(1, 21051088), (2, 10525544), (4, 5262772), (8, 2631386), (16, 1315693), (19, 1107952), (38, 553976), (76, 276988), (152, 138494), (304, 69247)]