20357380

素因数分解:

$2^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{1583}}^1$

素因数の和:2235

約数の個数: 24

約数和(自身を含む): 42844032

約数和(自身を除く): 22486652

約数列:

[1, 2, 4, 5, 10, 20, 643, 1286, 1583, 2572, 3166, 3215, 6332, 6430, 7915, 12860, 15830, 31660, 1017869, 2035738, 4071476, 5089345, 10178690, 20357380]

約数ペア:

[(1, 20357380), (2, 10178690), (4, 5089345), (5, 4071476), (10, 2035738), (20, 1017869), (643, 31660), (1286, 15830), (1583, 12860), (2572, 7915), (3166, 6430), (3215, 6332)]