20556460

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{27779}}^1$

素因数の和:27825

約数の個数: 24

約数和(自身を含む): 44336880

約数和(自身を除く): 23780420

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740, 27779, 55558, 111116, 138895, 277790, 555580, 1027823, 2055646, 4111292, 5139115, 10278230, 20556460]

約数ペア:

[(1, 20556460), (2, 10278230), (4, 5139115), (5, 4111292), (10, 2055646), (20, 1027823), (37, 555580), (74, 277790), (148, 138895), (185, 111116), (370, 55558), (740, 27779)]