21187313

素因数分解:

$7^1\times {\mathrm{29}}^2\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:185

約数の個数: 24

約数和(自身を含む): 25920960

約数和(自身を除く): 4733647

約数列:

[1, 7, 29, 59, 61, 203, 413, 427, 841, 1711, 1769, 3599, 5887, 11977, 12383, 25193, 49619, 51301, 104371, 347333, 359107, 730597, 3026759, 21187313]

約数ペア:

[(1, 21187313), (7, 3026759), (29, 730597), (59, 359107), (61, 347333), (203, 104371), (413, 51301), (427, 49619), (841, 25193), (1711, 12383), (1769, 11977), (3599, 5887)]