21000948976

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{9868867}}^1$

素因数の和:9868901

約数の個数: 40

約数和(自身を含む): 48949585280

約数和(自身を除く): 27948636304

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 112, 133, 152, 266, 304, 532, 1064, 2128, 9868867, 19737734, 39475468, 69082069, 78950936, 138164138, 157901872, 187508473, 276328276, 375016946, 552656552, 750033892, 1105313104, 1312559311, 1500067784, 2625118622, 3000135568, 5250237244, 10500474488, 21000948976]

約数ペア:

[(1, 21000948976), (2, 10500474488), (4, 5250237244), (7, 3000135568), (8, 2625118622), (14, 1500067784), (16, 1312559311), (19, 1105313104), (28, 750033892), (38, 552656552), (56, 375016946), (76, 276328276), (112, 187508473), (133, 157901872), (152, 138164138), (266, 78950936), (304, 69082069), (532, 39475468), (1064, 19737734), (2128, 9868867)]