2221420

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1019}}^1$

素因数の和:1137

約数の個数: 24

約数和(自身を含む): 4712400

約数和(自身を除く): 2490980

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1019, 1090, 2038, 2180, 4076, 5095, 10190, 20380, 111071, 222142, 444284, 555355, 1110710, 2221420]

約数ペア:

[(1, 2221420), (2, 1110710), (4, 555355), (5, 444284), (10, 222142), (20, 111071), (109, 20380), (218, 10190), (436, 5095), (545, 4076), (1019, 2180), (1090, 2038)]