12781909

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{2903}}^1$

素因数の和:2964

約数の個数: 16

約数和(自身を含む): 15890688

約数和(自身を除く): 3108779

約数列:

[1, 7, 17, 37, 119, 259, 629, 2903, 4403, 20321, 49351, 107411, 345457, 751877, 1825987, 12781909]

約数ペア:

[(1, 12781909), (7, 1825987), (17, 751877), (37, 345457), (119, 107411), (259, 49351), (629, 20321), (2903, 4403)]