19904716

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{503}}^1\times {\mathrm{761}}^1$

素因数の和:1281

約数の個数: 24

約数和(自身を含む): 37636704

約数和(自身を除く): 17731988

約数列:

[1, 2, 4, 13, 26, 52, 503, 761, 1006, 1522, 2012, 3044, 6539, 9893, 13078, 19786, 26156, 39572, 382783, 765566, 1531132, 4976179, 9952358, 19904716]

約数ペア:

[(1, 19904716), (2, 9952358), (4, 4976179), (13, 1531132), (26, 765566), (52, 382783), (503, 39572), (761, 26156), (1006, 19786), (1522, 13078), (2012, 9893), (3044, 6539)]