197980479920

素因数分解:

$2^4\times 5^1\times {\mathrm{2474755999}}^1$

素因数の和:2474756012

約数の個数: 20

約数和(自身を含む): 460304616000

約数和(自身を除く): 262324136080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2474755999, 4949511998, 9899023996, 12373779995, 19798047992, 24747559990, 39596095984, 49495119980, 98990239960, 197980479920]

約数ペア:

[(1, 197980479920), (2, 98990239960), (4, 49495119980), (5, 39596095984), (8, 24747559990), (10, 19798047992), (16, 12373779995), (20, 9899023996), (40, 4949511998), (80, 2474755999)]