19427020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13681}}^1$

素因数の和:13761

約数の個数: 24

約数和(自身を含む): 41374368

約数和(自身を除く): 21947348

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 13681, 27362, 54724, 68405, 136810, 273620, 971351, 1942702, 3885404, 4856755, 9713510, 19427020]

約数ペア:

[(1, 19427020), (2, 9713510), (4, 4856755), (5, 3885404), (10, 1942702), (20, 971351), (71, 273620), (142, 136810), (284, 68405), (355, 54724), (710, 27362), (1420, 13681)]