18995880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{311}}^1\times {\mathrm{509}}^1$

素因数の和:834

約数の個数: 64

約数和(自身を含む): 57283200

約数和(自身を除く): 38287320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 311, 509, 622, 933, 1018, 1244, 1527, 1555, 1866, 2036, 2488, 2545, 3054, 3110, 3732, 4072, 4665, 5090, 6108, 6220, 7464, 7635, 9330, 10180, 12216, 12440, 15270, 18660, 20360, 30540, 37320, 61080, 158299, 316598, 474897, 633196, 791495, 949794, 1266392, 1582990, 1899588, 2374485, 3165980, 3799176, 4748970, 6331960, 9497940, 18995880]

約数ペア:

[(1, 18995880), (2, 9497940), (3, 6331960), (4, 4748970), (5, 3799176), (6, 3165980), (8, 2374485), (10, 1899588), (12, 1582990), (15, 1266392), (20, 949794), (24, 791495), (30, 633196), (40, 474897), (60, 316598), (120, 158299), (311, 61080), (509, 37320), (622, 30540), (933, 20360), (1018, 18660), (1244, 15270), (1527, 12440), (1555, 12216), (1866, 10180), (2036, 9330), (2488, 7635), (2545, 7464), (3054, 6220), (3110, 6108), (3732, 5090), (4072, 4665)]