21081823

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{3539}}^1$

素因数の和:3606

約数の個数: 16

約数和(自身を含む): 25827840

約数和(自身を除く): 4746017

約数列:

[1, 7, 23, 37, 161, 259, 851, 3539, 5957, 24773, 81397, 130943, 569779, 916601, 3011689, 21081823]

約数ペア:

[(1, 21081823), (7, 3011689), (23, 916601), (37, 569779), (161, 130943), (259, 81397), (851, 24773), (3539, 5957)]