128840257

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{907}}^1$

素因数の和:1157

約数の個数: 24

約数和(自身を含む): 162306816

約数和(自身を除く): 33466559

約数列:

[1, 7, 13, 49, 91, 223, 637, 907, 1561, 2899, 6349, 10927, 11791, 20293, 44443, 82537, 142051, 202261, 577759, 1415827, 2629393, 9910789, 18405751, 128840257]

約数ペア:

[(1, 128840257), (7, 18405751), (13, 9910789), (49, 2629393), (91, 1415827), (223, 577759), (637, 202261), (907, 142051), (1561, 82537), (2899, 44443), (6349, 20293), (10927, 11791)]