21431210

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{20807}}^1$

素因数の和:20917

約数の個数: 16

約数和(自身を含む): 38952576

約数和(自身を除く): 17521366

約数列:

[1, 2, 5, 10, 103, 206, 515, 1030, 20807, 41614, 104035, 208070, 2143121, 4286242, 10715605, 21431210]

約数ペア:

[(1, 21431210), (2, 10715605), (5, 4286242), (10, 2143121), (103, 208070), (206, 104035), (515, 41614), (1030, 20807)]