21190551

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{3677}}^1$

素因数の和:3810

約数の個数: 16

約数和(自身を含む): 30189024

約数和(自身を除く): 8998473

約数列:

[1, 3, 17, 51, 113, 339, 1921, 3677, 5763, 11031, 62509, 187527, 415501, 1246503, 7063517, 21190551]

約数ペア:

[(1, 21190551), (3, 7063517), (17, 1246503), (51, 415501), (113, 187527), (339, 62509), (1921, 11031), (3677, 5763)]