2581540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9929}}^1$

素因数の和:9951

約数の個数: 24

約数和(自身を含む): 5838840

約数和(自身を除く): 3257300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 9929, 19858, 39716, 49645, 99290, 129077, 198580, 258154, 516308, 645385, 1290770, 2581540]

約数ペア:

[(1, 2581540), (2, 1290770), (4, 645385), (5, 516308), (10, 258154), (13, 198580), (20, 129077), (26, 99290), (52, 49645), (65, 39716), (130, 19858), (260, 9929)]