21638470

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{309121}}^1$

素因数の和:309135

約数の個数: 16

約数和(自身を含む): 44513568

約数和(自身を除く): 22875098

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 309121, 618242, 1545605, 2163847, 3091210, 4327694, 10819235, 21638470]

約数ペア:

[(1, 21638470), (2, 10819235), (5, 4327694), (7, 3091210), (10, 2163847), (14, 1545605), (35, 618242), (70, 309121)]