19774909

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{631}}^1$

素因数の和:697

約数の個数: 24

約数和(自身を含む): 25553024

約数和(自身を除く): 5778115

約数列:

[1, 7, 11, 37, 77, 121, 259, 407, 631, 847, 2849, 4417, 4477, 6941, 23347, 31339, 48587, 76351, 163429, 256817, 534457, 1797719, 2824987, 19774909]

約数ペア:

[(1, 19774909), (7, 2824987), (11, 1797719), (37, 534457), (77, 256817), (121, 163429), (259, 76351), (407, 48587), (631, 31339), (847, 23347), (2849, 6941), (4417, 4477)]