81361511

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{6563}}^1$

素因数の和:6611

約数の個数: 24

約数和(自身を含む): 107754624

約数和(自身を除く): 26393113

約数列:

[1, 7, 11, 23, 49, 77, 161, 253, 539, 1127, 1771, 6563, 12397, 45941, 72193, 150949, 321587, 505351, 1056643, 1660439, 3537457, 7396501, 11623073, 81361511]

約数ペア:

[(1, 81361511), (7, 11623073), (11, 7396501), (23, 3537457), (49, 1660439), (77, 1056643), (161, 505351), (253, 321587), (539, 150949), (1127, 72193), (1771, 45941), (6563, 12397)]