19881808

素因数分解:

$2^4\times {\mathrm{293}}^1\times {\mathrm{4241}}^1$

素因数の和:4542

約数の個数: 20

約数和(自身を含む): 38661588

約数和(自身を除く): 18779780

約数列:

[1, 2, 4, 8, 16, 293, 586, 1172, 2344, 4241, 4688, 8482, 16964, 33928, 67856, 1242613, 2485226, 4970452, 9940904, 19881808]

約数ペア:

[(1, 19881808), (2, 9940904), (4, 4970452), (8, 2485226), (16, 1242613), (293, 67856), (586, 33928), (1172, 16964), (2344, 8482), (4241, 4688)]