19744972

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{431}}^1\times {\mathrm{881}}^1$

素因数の和:1329

約数の個数: 24

約数和(自身を含む): 37340352

約数和(自身を除く): 17595380

約数列:

[1, 2, 4, 13, 26, 52, 431, 862, 881, 1724, 1762, 3524, 5603, 11206, 11453, 22412, 22906, 45812, 379711, 759422, 1518844, 4936243, 9872486, 19744972]

約数ペア:

[(1, 19744972), (2, 9872486), (4, 4936243), (13, 1518844), (26, 759422), (52, 379711), (431, 45812), (862, 22906), (881, 22412), (1724, 11453), (1762, 11206), (3524, 5603)]