20559217

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{277}}^1\times {\mathrm{461}}^1$

素因数の和:768

約数の個数: 16

約数和(自身を含む): 24659712

約数和(自身を除く): 4100495

約数列:

[1, 7, 23, 161, 277, 461, 1939, 3227, 6371, 10603, 44597, 74221, 127697, 893879, 2937031, 20559217]

約数ペア:

[(1, 20559217), (7, 2937031), (23, 893879), (161, 127697), (277, 74221), (461, 44597), (1939, 10603), (3227, 6371)]