20881695

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{4817}}^1$

素因数の和:4859

約数の個数: 24

約数和(自身を含む): 35499024

約数和(自身を除く): 14617329

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 289, 867, 1445, 4335, 4817, 14451, 24085, 72255, 81889, 245667, 409445, 1228335, 1392113, 4176339, 6960565, 20881695]

約数ペア:

[(1, 20881695), (3, 6960565), (5, 4176339), (15, 1392113), (17, 1228335), (51, 409445), (85, 245667), (255, 81889), (289, 72255), (867, 24085), (1445, 14451), (4335, 4817)]