19919820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{331997}}^1$

素因数の和:332009

約数の個数: 24

約数和(自身を含む): 55775664

約数和(自身を除く): 35855844

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 331997, 663994, 995991, 1327988, 1659985, 1991982, 3319970, 3983964, 4979955, 6639940, 9959910, 19919820]

約数ペア:

[(1, 19919820), (2, 9959910), (3, 6639940), (4, 4979955), (5, 3983964), (6, 3319970), (10, 1991982), (12, 1659985), (15, 1327988), (20, 995991), (30, 663994), (60, 331997)]