21312153

素因数分解:

$3^4\times {\mathrm{107}}^1\times {\mathrm{2459}}^1$

素因数の和:2578

約数の個数: 20

約数和(自身を含む): 32147280

約数和(自身を除く): 10835127

約数列:

[1, 3, 9, 27, 81, 107, 321, 963, 2459, 2889, 7377, 8667, 22131, 66393, 199179, 263113, 789339, 2368017, 7104051, 21312153]

約数ペア:

[(1, 21312153), (3, 7104051), (9, 2368017), (27, 789339), (81, 263113), (107, 199179), (321, 66393), (963, 22131), (2459, 8667), (2889, 7377)]