20642223

素因数分解:

$3^1\times 7^1\times {\mathrm{787}}^1\times {\mathrm{1249}}^1$

素因数の和:2046

約数の個数: 16

約数和(自身を含む): 31520000

約数和(自身を除く): 10877777

約数列:

[1, 3, 7, 21, 787, 1249, 2361, 3747, 5509, 8743, 16527, 26229, 982963, 2948889, 6880741, 20642223]

約数ペア:

[(1, 20642223), (3, 6880741), (7, 2948889), (21, 982963), (787, 26229), (1249, 16527), (2361, 8743), (3747, 5509)]