21072585

素因数分解:

$3^1\times 5^1\times {\mathrm{739}}^1\times {\mathrm{1901}}^1$

素因数の和:2648

約数の個数: 16

約数和(自身を含む): 33779520

約数和(自身を除く): 12706935

約数列:

[1, 3, 5, 15, 739, 1901, 2217, 3695, 5703, 9505, 11085, 28515, 1404839, 4214517, 7024195, 21072585]

約数ペア:

[(1, 21072585), (3, 7024195), (5, 4214517), (15, 1404839), (739, 28515), (1901, 11085), (2217, 9505), (3695, 5703)]