28067221

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{18143}}^1$

素因数の和:18180

約数の個数: 16

約数和(自身を含む): 36578304

約数和(自身を除く): 8511083

約数列:

[1, 7, 13, 17, 91, 119, 221, 1547, 18143, 127001, 235859, 308431, 1651013, 2159017, 4009603, 28067221]

約数ペア:

[(1, 28067221), (7, 4009603), (13, 2159017), (17, 1651013), (91, 308431), (119, 235859), (221, 127001), (1547, 18143)]