156987123980

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{39444001}}^1$

素因数の和:39444209

約数の個数: 24

約数和(自身を含む): 331329616800

約数和(自身を除く): 174342492820

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 39444001, 78888002, 157776004, 197220005, 394440010, 788880020, 7849356199, 15698712398, 31397424796, 39246780995, 78493561990, 156987123980]

約数ペア:

[(1, 156987123980), (2, 78493561990), (4, 39246780995), (5, 31397424796), (10, 15698712398), (20, 7849356199), (199, 788880020), (398, 394440010), (796, 197220005), (995, 157776004), (1990, 78888002), (3980, 39444001)]