18816868

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{443}}^1$

素因数の和:532

約数の個数: 48

約数和(自身を含む): 39682944

約数和(自身を除く): 20866076

約数列:

[1, 2, 4, 7, 14, 28, 37, 41, 74, 82, 148, 164, 259, 287, 443, 518, 574, 886, 1036, 1148, 1517, 1772, 3034, 3101, 6068, 6202, 10619, 12404, 16391, 18163, 21238, 32782, 36326, 42476, 65564, 72652, 114737, 127141, 229474, 254282, 458948, 508564, 672031, 1344062, 2688124, 4704217, 9408434, 18816868]

約数ペア:

[(1, 18816868), (2, 9408434), (4, 4704217), (7, 2688124), (14, 1344062), (28, 672031), (37, 508564), (41, 458948), (74, 254282), (82, 229474), (148, 127141), (164, 114737), (259, 72652), (287, 65564), (443, 42476), (518, 36326), (574, 32782), (886, 21238), (1036, 18163), (1148, 16391), (1517, 12404), (1772, 10619), (3034, 6202), (3101, 6068)]