20639820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{343997}}^1$

素因数の和:344009

約数の個数: 24

約数和(自身を含む): 57791664

約数和(自身を除く): 37151844

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 343997, 687994, 1031991, 1375988, 1719985, 2063982, 3439970, 4127964, 5159955, 6879940, 10319910, 20639820]

約数ペア:

[(1, 20639820), (2, 10319910), (3, 6879940), (4, 5159955), (5, 4127964), (6, 3439970), (10, 2063982), (12, 1719985), (15, 1375988), (20, 1031991), (30, 687994), (60, 343997)]