208519990

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{60793}}^1$

素因数の和:60821

約数の個数: 32

約数和(自身を含む): 437716800

約数和(自身を除く): 229196810

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 343, 490, 686, 1715, 3430, 60793, 121586, 303965, 425551, 607930, 851102, 2127755, 2978857, 4255510, 5957714, 14894285, 20851999, 29788570, 41703998, 104259995, 208519990]

約数ペア:

[(1, 208519990), (2, 104259995), (5, 41703998), (7, 29788570), (10, 20851999), (14, 14894285), (35, 5957714), (49, 4255510), (70, 2978857), (98, 2127755), (245, 851102), (343, 607930), (490, 425551), (686, 303965), (1715, 121586), (3430, 60793)]