19800120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{165001}}^1$

素因数の和:165015

約数の個数: 32

約数和(自身を含む): 59400720

約数和(自身を除く): 39600600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 165001, 330002, 495003, 660004, 825005, 990006, 1320008, 1650010, 1980012, 2475015, 3300020, 3960024, 4950030, 6600040, 9900060, 19800120]

約数ペア:

[(1, 19800120), (2, 9900060), (3, 6600040), (4, 4950030), (5, 3960024), (6, 3300020), (8, 2475015), (10, 1980012), (12, 1650010), (15, 1320008), (20, 990006), (24, 825005), (30, 660004), (40, 495003), (60, 330002), (120, 165001)]