19745380

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{4679}}^1$

素因数の和:4899

約数の個数: 24

約数和(自身を含む): 41670720

約数和(自身を除く): 21925340

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 4679, 9358, 18716, 23395, 46790, 93580, 987269, 1974538, 3949076, 4936345, 9872690, 19745380]

約数ペア:

[(1, 19745380), (2, 9872690), (4, 4936345), (5, 3949076), (10, 1974538), (20, 987269), (211, 93580), (422, 46790), (844, 23395), (1055, 18716), (2110, 9358), (4220, 4679)]