21273952

素因数分解:

$2^5\times 7^1\times {\mathrm{73}}^1\times {\mathrm{1301}}^1$

素因数の和:1391

約数の個数: 48

約数和(自身を含む): 48559392

約数和(自身を除く): 27285440

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 73, 112, 146, 224, 292, 511, 584, 1022, 1168, 1301, 2044, 2336, 2602, 4088, 5204, 8176, 9107, 10408, 16352, 18214, 20816, 36428, 41632, 72856, 94973, 145712, 189946, 291424, 379892, 664811, 759784, 1329622, 1519568, 2659244, 3039136, 5318488, 10636976, 21273952]

約数ペア:

[(1, 21273952), (2, 10636976), (4, 5318488), (7, 3039136), (8, 2659244), (14, 1519568), (16, 1329622), (28, 759784), (32, 664811), (56, 379892), (73, 291424), (112, 189946), (146, 145712), (224, 94973), (292, 72856), (511, 41632), (584, 36428), (1022, 20816), (1168, 18214), (1301, 16352), (2044, 10408), (2336, 9107), (2602, 8176), (4088, 5204)]