128725961

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{491}}^1$

素因数の和:621

約数の個数: 32

約数和(自身を含む): 164871168

約数和(自身を除く): 36145207

約数列:

[1, 7, 13, 43, 67, 91, 301, 469, 491, 559, 871, 2881, 3437, 3913, 6097, 6383, 20167, 21113, 32897, 37453, 44681, 147791, 230279, 262171, 274469, 427661, 1414571, 1921283, 2993627, 9901997, 18389423, 128725961]

約数ペア:

[(1, 128725961), (7, 18389423), (13, 9901997), (43, 2993627), (67, 1921283), (91, 1414571), (301, 427661), (469, 274469), (491, 262171), (559, 230279), (871, 147791), (2881, 44681), (3437, 37453), (3913, 32897), (6097, 21113), (6383, 20167)]