21689863

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{503}}^1$

素因数の和:654

約数の個数: 16

約数和(自身を含む): 24385536

約数和(自身を除く): 2695673

約数列:

[1, 13, 31, 107, 403, 503, 1391, 3317, 6539, 15593, 43121, 53821, 202709, 699673, 1668451, 21689863]

約数ペア:

[(1, 21689863), (13, 1668451), (31, 699673), (107, 202709), (403, 53821), (503, 43121), (1391, 15593), (3317, 6539)]