239640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{1997}}^1$

素因数の和:2011

約数の個数: 32

約数和(自身を含む): 719280

約数和(自身を除く): 479640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 1997, 3994, 5991, 7988, 9985, 11982, 15976, 19970, 23964, 29955, 39940, 47928, 59910, 79880, 119820, 239640]

約数ペア:

[(1, 239640), (2, 119820), (3, 79880), (4, 59910), (5, 47928), (6, 39940), (8, 29955), (10, 23964), (12, 19970), (15, 15976), (20, 11982), (24, 9985), (30, 7988), (40, 5991), (60, 3994), (120, 1997)]