20621880

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{57283}}^1$

素因数の和:57300

約数の個数: 48

約数和(自身を含む): 67022280

約数和(自身を除く): 46400400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 57283, 114566, 171849, 229132, 286415, 343698, 458264, 515547, 572830, 687396, 859245, 1031094, 1145660, 1374792, 1718490, 2062188, 2291320, 2577735, 3436980, 4124376, 5155470, 6873960, 10310940, 20621880]

約数ペア:

[(1, 20621880), (2, 10310940), (3, 6873960), (4, 5155470), (5, 4124376), (6, 3436980), (8, 2577735), (9, 2291320), (10, 2062188), (12, 1718490), (15, 1374792), (18, 1145660), (20, 1031094), (24, 859245), (30, 687396), (36, 572830), (40, 515547), (45, 458264), (60, 343698), (72, 286415), (90, 229132), (120, 171849), (180, 114566), (360, 57283)]