21438130

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{306259}}^1$

素因数の和:306273

約数の個数: 16

約数和(自身を含む): 44101440

約数和(自身を除く): 22663310

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 306259, 612518, 1531295, 2143813, 3062590, 4287626, 10719065, 21438130]

約数ペア:

[(1, 21438130), (2, 10719065), (5, 4287626), (7, 3062590), (10, 2143813), (14, 1531295), (35, 612518), (70, 306259)]