21170492

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{16087}}^1$

素因数の和:16145

約数の個数: 24

約数和(自身を含む): 43244544

約数和(自身を除く): 22074052

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 329, 658, 1316, 16087, 32174, 64348, 112609, 225218, 450436, 756089, 1512178, 3024356, 5292623, 10585246, 21170492]

約数ペア:

[(1, 21170492), (2, 10585246), (4, 5292623), (7, 3024356), (14, 1512178), (28, 756089), (47, 450436), (94, 225218), (188, 112609), (329, 64348), (658, 32174), (1316, 16087)]