21284185

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{6967}}^1$

素因数の和:7032

約数の個数: 16

約数和(自身を含む): 28094976

約数和(自身を除く): 6810791

約数列:

[1, 5, 13, 47, 65, 235, 611, 3055, 6967, 34835, 90571, 327449, 452855, 1637245, 4256837, 21284185]

約数ペア:

[(1, 21284185), (5, 4256837), (13, 1637245), (47, 452855), (65, 327449), (235, 90571), (611, 34835), (3055, 6967)]