21047022

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^2\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:166

約数の個数: 72

約数和(自身を含む): 49926240

約数和(自身を除く): 28879218

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 41, 57, 79, 82, 114, 123, 158, 171, 237, 246, 342, 361, 369, 474, 711, 722, 738, 779, 1083, 1422, 1501, 1558, 2166, 2337, 3002, 3239, 3249, 4503, 4674, 6478, 6498, 7011, 9006, 9717, 13509, 14022, 14801, 19434, 27018, 28519, 29151, 29602, 44403, 57038, 58302, 61541, 85557, 88806, 123082, 133209, 171114, 184623, 256671, 266418, 369246, 513342, 553869, 1107738, 1169279, 2338558, 3507837, 7015674, 10523511, 21047022]

約数ペア:

[(1, 21047022), (2, 10523511), (3, 7015674), (6, 3507837), (9, 2338558), (18, 1169279), (19, 1107738), (38, 553869), (41, 513342), (57, 369246), (79, 266418), (82, 256671), (114, 184623), (123, 171114), (158, 133209), (171, 123082), (237, 88806), (246, 85557), (342, 61541), (361, 58302), (369, 57038), (474, 44403), (711, 29602), (722, 29151), (738, 28519), (779, 27018), (1083, 19434), (1422, 14801), (1501, 14022), (1558, 13509), (2166, 9717), (2337, 9006), (3002, 7011), (3239, 6498), (3249, 6478), (4503, 4674)]