19171280

素因数分解:

$2^4\times 5^1\times {\mathrm{239641}}^1$

素因数の和:239654

約数の個数: 20

約数和(自身を含む): 44573412

約数和(自身を除く): 25402132

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 239641, 479282, 958564, 1198205, 1917128, 2396410, 3834256, 4792820, 9585640, 19171280]

約数ペア:

[(1, 19171280), (2, 9585640), (4, 4792820), (5, 3834256), (8, 2396410), (10, 1917128), (16, 1198205), (20, 958564), (40, 479282), (80, 239641)]