21982016

素因数分解:

$2^6\times 7^1\times {\mathrm{139}}^1\times {\mathrm{353}}^1$

素因数の和:511

約数の個数: 56

約数和(自身を含む): 50352960

約数和(自身を除く): 28370944

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 139, 224, 278, 353, 448, 556, 706, 973, 1112, 1412, 1946, 2224, 2471, 2824, 3892, 4448, 4942, 5648, 7784, 8896, 9884, 11296, 15568, 19768, 22592, 31136, 39536, 49067, 62272, 79072, 98134, 158144, 196268, 343469, 392536, 686938, 785072, 1373876, 1570144, 2747752, 3140288, 5495504, 10991008, 21982016]

約数ペア:

[(1, 21982016), (2, 10991008), (4, 5495504), (7, 3140288), (8, 2747752), (14, 1570144), (16, 1373876), (28, 785072), (32, 686938), (56, 392536), (64, 343469), (112, 196268), (139, 158144), (224, 98134), (278, 79072), (353, 62272), (448, 49067), (556, 39536), (706, 31136), (973, 22592), (1112, 19768), (1412, 15568), (1946, 11296), (2224, 9884), (2471, 8896), (2824, 7784), (3892, 5648), (4448, 4942)]