19868540

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{11969}}^1$

素因数の和:12061

約数の個数: 24

約数和(自身を含む): 42230160

約数和(自身を除く): 22361620

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 11969, 23938, 47876, 59845, 119690, 239380, 993427, 1986854, 3973708, 4967135, 9934270, 19868540]

約数ペア:

[(1, 19868540), (2, 9934270), (4, 4967135), (5, 3973708), (10, 1986854), (20, 993427), (83, 239380), (166, 119690), (332, 59845), (415, 47876), (830, 23938), (1660, 11969)]