20513880

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{56983}}^1$

素因数の和:57000

約数の個数: 48

約数和(自身を含む): 66671280

約数和(自身を除く): 46157400

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, 56983, 113966, 170949, 227932, 284915, 341898, 455864, 512847, 569830, 683796, 854745, 1025694, 1139660, 1367592, 1709490, 2051388, 2279320, 2564235, 3418980, 4102776, 5128470, 6837960, 10256940, 20513880]

約数ペア:

[(1, 20513880), (2, 10256940), (3, 6837960), (4, 5128470), (5, 4102776), (6, 3418980), (8, 2564235), (9, 2279320), (10, 2051388), (12, 1709490), (15, 1367592), (18, 1139660), (20, 1025694), (24, 854745), (30, 683796), (36, 569830), (40, 512847), (45, 455864), (60, 341898), (72, 284915), (90, 227932), (120, 170949), (180, 113966), (360, 56983)]