20128945

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1\times {\mathrm{373}}^1$

素因数の和:672

約数の個数: 16

約数和(自身を含む): 24881472

約数和(自身を除く): 4752527

約数列:

[1, 5, 43, 215, 251, 373, 1255, 1865, 10793, 16039, 53965, 80195, 93623, 468115, 4025789, 20128945]

約数ペア:

[(1, 20128945), (5, 4025789), (43, 468115), (215, 93623), (251, 80195), (373, 53965), (1255, 16039), (1865, 10793)]