21000298505

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{10723}}^1\times {\mathrm{9109}}^1$

素因数の和:19880

約数の個数: 16

約数和(自身を含む): 25791648960

約数和(自身を除く): 4791350455

約数列:

[1, 5, 43, 215, 9109, 10723, 45545, 53615, 391687, 461089, 1958435, 2305445, 97675807, 488379035, 4200059701, 21000298505]

約数ペア:

[(1, 21000298505), (5, 4200059701), (43, 488379035), (215, 97675807), (9109, 2305445), (10723, 1958435), (45545, 461089), (53615, 391687)]