1291280

素因数分解:

$2^4\times 5^1\times {\mathrm{16141}}^1$

素因数の和:16154

約数の個数: 20

約数和(自身を含む): 3002412

約数和(自身を除く): 1711132

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 16141, 32282, 64564, 80705, 129128, 161410, 258256, 322820, 645640, 1291280]

約数ペア:

[(1, 1291280), (2, 645640), (4, 322820), (5, 258256), (8, 161410), (10, 129128), (16, 80705), (20, 64564), (40, 32282), (80, 16141)]