21070

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{43}}^1$

素因数の和:64

約数の個数: 24

約数和(自身を含む): 45144

約数和(自身を除く): 24074

約数列:

[1, 2, 5, 7, 10, 14, 35, 43, 49, 70, 86, 98, 215, 245, 301, 430, 490, 602, 1505, 2107, 3010, 4214, 10535, 21070]

約数ペア:

[(1, 21070), (2, 10535), (5, 4214), (7, 3010), (10, 2107), (14, 1505), (35, 602), (43, 490), (49, 430), (70, 301), (86, 245), (98, 215)]