281130160

素因数分解:

$2^4\times 5^1\times {\mathrm{3514127}}^1$

素因数の和:3514140

約数の個数: 20

約数和(自身を含む): 653627808

約数和(自身を除く): 372497648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3514127, 7028254, 14056508, 17570635, 28113016, 35141270, 56226032, 70282540, 140565080, 281130160]

約数ペア:

[(1, 281130160), (2, 140565080), (4, 70282540), (5, 56226032), (8, 35141270), (10, 28113016), (16, 17570635), (20, 14056508), (40, 7028254), (80, 3514127)]