87889991

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{21317}}^1$

素因数の和:21374

約数の個数: 16

約数和(自身を含む): 109148160

約数和(自身を除く): 21258169

約数列:

[1, 7, 19, 31, 133, 217, 589, 4123, 21317, 149219, 405023, 660827, 2835161, 4625789, 12555713, 87889991]

約数ペア:

[(1, 87889991), (7, 12555713), (19, 4625789), (31, 2835161), (133, 660827), (217, 405023), (589, 149219), (4123, 21317)]