21491974

素因数分解:

$2^1\times 7^1\times {\mathrm{1123}}^1\times {\mathrm{1367}}^1$

素因数の和:2499

約数の個数: 16

約数和(自身を含む): 36903168

約数和(自身を除く): 15411194

約数列:

[1, 2, 7, 14, 1123, 1367, 2246, 2734, 7861, 9569, 15722, 19138, 1535141, 3070282, 10745987, 21491974]

約数ペア:

[(1, 21491974), (2, 10745987), (7, 3070282), (14, 1535141), (1123, 19138), (1367, 15722), (2246, 9569), (2734, 7861)]