21000478544

素因数分解:

$2^4\times {\mathrm{617}}^1\times {\mathrm{2127277}}^1$

素因数の和:2127902

約数の個数: 20

約数和(自身を含む): 40754391924

約数和(自身を除く): 19753913380

約数列:

[1, 2, 4, 8, 16, 617, 1234, 2468, 4936, 9872, 2127277, 4254554, 8509108, 17018216, 34036432, 1312529909, 2625059818, 5250119636, 10500239272, 21000478544]

約数ペア:

[(1, 21000478544), (2, 10500239272), (4, 5250119636), (8, 2625059818), (16, 1312529909), (617, 34036432), (1234, 17018216), (2468, 8509108), (4936, 4254554), (9872, 2127277)]