20513660

素因数分解:

$2^2\times 5^1\times {\mathrm{619}}^1\times {\mathrm{1657}}^1$

素因数の和:2285

約数の個数: 24

約数和(自身を含む): 43174320

約数和(自身を除く): 22660660

約数列:

[1, 2, 4, 5, 10, 20, 619, 1238, 1657, 2476, 3095, 3314, 6190, 6628, 8285, 12380, 16570, 33140, 1025683, 2051366, 4102732, 5128415, 10256830, 20513660]

約数ペア:

[(1, 20513660), (2, 10256830), (4, 5128415), (5, 4102732), (10, 2051366), (20, 1025683), (619, 33140), (1238, 16570), (1657, 12380), (2476, 8285), (3095, 6628), (3314, 6190)]