21856212

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2017}}^1$

素因数の和:2077

約数の個数: 72

約数和(自身を含む): 64640576

約数和(自身を除く): 42784364

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 43, 63, 84, 86, 126, 129, 172, 252, 258, 301, 387, 516, 602, 774, 903, 1204, 1548, 1806, 2017, 2709, 3612, 4034, 5418, 6051, 8068, 10836, 12102, 14119, 18153, 24204, 28238, 36306, 42357, 56476, 72612, 84714, 86731, 127071, 169428, 173462, 254142, 260193, 346924, 508284, 520386, 607117, 780579, 1040772, 1214234, 1561158, 1821351, 2428468, 3122316, 3642702, 5464053, 7285404, 10928106, 21856212]

約数ペア:

[(1, 21856212), (2, 10928106), (3, 7285404), (4, 5464053), (6, 3642702), (7, 3122316), (9, 2428468), (12, 1821351), (14, 1561158), (18, 1214234), (21, 1040772), (28, 780579), (36, 607117), (42, 520386), (43, 508284), (63, 346924), (84, 260193), (86, 254142), (126, 173462), (129, 169428), (172, 127071), (252, 86731), (258, 84714), (301, 72612), (387, 56476), (516, 42357), (602, 36306), (774, 28238), (903, 24204), (1204, 18153), (1548, 14119), (1806, 12102), (2017, 10836), (2709, 8068), (3612, 6051), (4034, 5418)]