20407618

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{1721}}^1$

素因数の和:1759

約数の個数: 36

約数和(自身を含む): 39163446

約数和(自身を除く): 18755828

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 121, 154, 242, 539, 847, 1078, 1694, 1721, 3442, 5929, 11858, 12047, 18931, 24094, 37862, 84329, 132517, 168658, 208241, 265034, 416482, 927619, 1457687, 1855238, 2915374, 10203809, 20407618]

約数ペア:

[(1, 20407618), (2, 10203809), (7, 2915374), (11, 1855238), (14, 1457687), (22, 927619), (49, 416482), (77, 265034), (98, 208241), (121, 168658), (154, 132517), (242, 84329), (539, 37862), (847, 24094), (1078, 18931), (1694, 12047), (1721, 11858), (3442, 5929)]