21598780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{154277}}^1$

素因数の和:154293

約数の個数: 24

約数和(自身を含む): 51837408

約数和(自身を除く): 30238628

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 154277, 308554, 617108, 771385, 1079939, 1542770, 2159878, 3085540, 4319756, 5399695, 10799390, 21598780]

約数ペア:

[(1, 21598780), (2, 10799390), (4, 5399695), (5, 4319756), (7, 3085540), (10, 2159878), (14, 1542770), (20, 1079939), (28, 771385), (35, 617108), (70, 308554), (140, 154277)]