21856471

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{461}}^1\times {\mathrm{521}}^1$

素因数の和:1002

約数の個数: 16

約数和(自身を含む): 27010368

約数和(自身を除く): 5153897

約数列:

[1, 7, 13, 91, 461, 521, 3227, 3647, 5993, 6773, 41951, 47411, 240181, 1681267, 3122353, 21856471]

約数ペア:

[(1, 21856471), (7, 3122353), (13, 1681267), (91, 240181), (461, 47411), (521, 41951), (3227, 6773), (3647, 5993)]