21359996

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{16231}}^1$

素因数の和:16289

約数の個数: 24

約数和(自身を含む): 43631616

約数和(自身を除く): 22271620

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 329, 658, 1316, 16231, 32462, 64924, 113617, 227234, 454468, 762857, 1525714, 3051428, 5339999, 10679998, 21359996]

約数ペア:

[(1, 21359996), (2, 10679998), (4, 5339999), (7, 3051428), (14, 1525714), (28, 762857), (47, 454468), (94, 227234), (188, 113617), (329, 64924), (658, 32462), (1316, 16231)]