20981035

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:235

約数の個数: 32

約数和(自身を含む): 28016640

約数和(自身を除く): 7035605

約数列:

[1, 5, 19, 37, 47, 95, 127, 185, 235, 635, 703, 893, 1739, 2413, 3515, 4465, 4699, 5969, 8695, 12065, 23495, 29845, 33041, 89281, 113411, 165205, 220853, 446405, 567055, 1104265, 4196207, 20981035]

約数ペア:

[(1, 20981035), (5, 4196207), (19, 1104265), (37, 567055), (47, 446405), (95, 220853), (127, 165205), (185, 113411), (235, 89281), (635, 33041), (703, 29845), (893, 23495), (1739, 12065), (2413, 8695), (3515, 5969), (4465, 4699)]