126380

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:169

約数の個数: 24

約数和(自身を含む): 272160

約数和(自身を除く): 145780

約数列:

[1, 2, 4, 5, 10, 20, 71, 89, 142, 178, 284, 355, 356, 445, 710, 890, 1420, 1780, 6319, 12638, 25276, 31595, 63190, 126380]

約数ペア:

[(1, 126380), (2, 63190), (4, 31595), (5, 25276), (10, 12638), (20, 6319), (71, 1780), (89, 1420), (142, 890), (178, 710), (284, 445), (355, 356)]