12920245

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{1009}}^1$

素因数の和:1224

約数の個数: 16

約数和(自身を含む): 16798320

約数和(自身を除く): 3878075

約数列:

[1, 5, 13, 65, 197, 985, 1009, 2561, 5045, 12805, 13117, 65585, 198773, 993865, 2584049, 12920245]

約数ペア:

[(1, 12920245), (5, 2584049), (13, 993865), (65, 198773), (197, 65585), (985, 13117), (1009, 12805), (2561, 5045)]