21530866

素因数分解:

$2^1\times 7^1\times {\mathrm{647}}^1\times {\mathrm{2377}}^1$

素因数の和:3033

約数の個数: 16

約数和(自身を含む): 36982656

約数和(自身を除く): 15451790

約数列:

[1, 2, 7, 14, 647, 1294, 2377, 4529, 4754, 9058, 16639, 33278, 1537919, 3075838, 10765433, 21530866]

約数ペア:

[(1, 21530866), (2, 10765433), (7, 3075838), (14, 1537919), (647, 33278), (1294, 16639), (2377, 9058), (4529, 4754)]