20456905

素因数分解:

$5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{2621}}^1$

素因数の和:2856

約数の個数: 16

約数和(自身を含む): 28191744

約数和(自身を除く): 7734839

約数列:

[1, 5, 7, 35, 223, 1115, 1561, 2621, 7805, 13105, 18347, 91735, 584483, 2922415, 4091381, 20456905]

約数ペア:

[(1, 20456905), (5, 4091381), (7, 2922415), (35, 584483), (223, 91735), (1115, 18347), (1561, 13105), (2621, 7805)]