21890540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{156361}}^1$

素因数の和:156377

約数の個数: 24

約数和(自身を含む): 52537632

約数和(自身を除く): 30647092

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 156361, 312722, 625444, 781805, 1094527, 1563610, 2189054, 3127220, 4378108, 5472635, 10945270, 21890540]

約数ペア:

[(1, 21890540), (2, 10945270), (4, 5472635), (5, 4378108), (7, 3127220), (10, 2189054), (14, 1563610), (20, 1094527), (28, 781805), (35, 625444), (70, 312722), (140, 156361)]