19888540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{142061}}^1$

素因数の和:142077

約数の個数: 24

約数和(自身を含む): 47732832

約数和(自身を除く): 27844292

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 142061, 284122, 568244, 710305, 994427, 1420610, 1988854, 2841220, 3977708, 4972135, 9944270, 19888540]

約数ペア:

[(1, 19888540), (2, 9944270), (4, 4972135), (5, 3977708), (7, 2841220), (10, 1988854), (14, 1420610), (20, 994427), (28, 710305), (35, 568244), (70, 284122), (140, 142061)]