21397030

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{29311}}^1$

素因数の和:29391

約数の個数: 16

約数和(自身を含む): 39043584

約数和(自身を除く): 17646554

約数列:

[1, 2, 5, 10, 73, 146, 365, 730, 29311, 58622, 146555, 293110, 2139703, 4279406, 10698515, 21397030]

約数ペア:

[(1, 21397030), (2, 10698515), (5, 4279406), (10, 2139703), (73, 293110), (146, 146555), (365, 58622), (730, 29311)]