21479869

素因数分解:

${\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{307}}^1$

素因数の和:436

約数の個数: 16

約数和(自身を含む): 23220736

約数和(自身を除く): 1740867

約数列:

[1, 31, 37, 61, 307, 1147, 1891, 2257, 9517, 11359, 18727, 69967, 352129, 580537, 692899, 21479869]

約数ペア:

[(1, 21479869), (31, 692899), (37, 580537), (61, 352129), (307, 69967), (1147, 18727), (1891, 11359), (2257, 9517)]