129361280

素因数分解:

$2^7\times 5^1\times {\mathrm{202127}}^1$

素因数の和:202146

約数の個数: 32

約数和(自身を含む): 309255840

約数和(自身を除く): 179894560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 202127, 404254, 808508, 1010635, 1617016, 2021270, 3234032, 4042540, 6468064, 8085080, 12936128, 16170160, 25872256, 32340320, 64680640, 129361280]

約数ペア:

[(1, 129361280), (2, 64680640), (4, 32340320), (5, 25872256), (8, 16170160), (10, 12936128), (16, 8085080), (20, 6468064), (32, 4042540), (40, 3234032), (64, 2021270), (80, 1617016), (128, 1010635), (160, 808508), (320, 404254), (640, 202127)]