20193140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{349}}^1$

素因数の和:632

約数の個数: 48

約数和(自身を含む): 46569600

約数和(自身を除く): 26376460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 263, 349, 526, 698, 1052, 1315, 1396, 1745, 2630, 2893, 3490, 3839, 5260, 5786, 6980, 7678, 11572, 14465, 15356, 19195, 28930, 38390, 57860, 76780, 91787, 183574, 367148, 458935, 917870, 1009657, 1835740, 2019314, 4038628, 5048285, 10096570, 20193140]

約数ペア:

[(1, 20193140), (2, 10096570), (4, 5048285), (5, 4038628), (10, 2019314), (11, 1835740), (20, 1009657), (22, 917870), (44, 458935), (55, 367148), (110, 183574), (220, 91787), (263, 76780), (349, 57860), (526, 38390), (698, 28930), (1052, 19195), (1315, 15356), (1396, 14465), (1745, 11572), (2630, 7678), (2893, 6980), (3490, 5786), (3839, 5260)]