13218915

素因数分解:

$3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{3511}}^1$

素因数の和:3770

約数の個数: 16

約数和(自身を含む): 21240576

約数和(自身を除く): 8021661

約数列:

[1, 3, 5, 15, 251, 753, 1255, 3511, 3765, 10533, 17555, 52665, 881261, 2643783, 4406305, 13218915]

約数ペア:

[(1, 13218915), (3, 4406305), (5, 2643783), (15, 881261), (251, 52665), (753, 17555), (1255, 10533), (3511, 3765)]