21139472

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{28111}}^1$

素因数の和:28166

約数の個数: 20

約数和(自身を含む): 41830656

約数和(自身を除く): 20691184

約数列:

[1, 2, 4, 8, 16, 47, 94, 188, 376, 752, 28111, 56222, 112444, 224888, 449776, 1321217, 2642434, 5284868, 10569736, 21139472]

約数ペア:

[(1, 21139472), (2, 10569736), (4, 5284868), (8, 2642434), (16, 1321217), (47, 449776), (94, 224888), (188, 112444), (376, 56222), (752, 28111)]