21308630

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{43487}}^1$

素因数の和:43508

約数の個数: 24

約数和(自身を含む): 44618688

約数和(自身を除く): 23310058

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 43487, 86974, 217435, 304409, 434870, 608818, 1522045, 2130863, 3044090, 4261726, 10654315, 21308630]

約数ペア:

[(1, 21308630), (2, 10654315), (5, 4261726), (7, 3044090), (10, 2130863), (14, 1522045), (35, 608818), (49, 434870), (70, 304409), (98, 217435), (245, 86974), (490, 43487)]