81378025

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{307}}^1\times {\mathrm{461}}^1$

素因数の和:801

約数の個数: 24

約数和(自身を含む): 105868224

約数和(自身を除く): 24490199

約数列:

[1, 5, 23, 25, 115, 307, 461, 575, 1535, 2305, 7061, 7675, 10603, 11525, 35305, 53015, 141527, 176525, 265075, 707635, 3255121, 3538175, 16275605, 81378025]

約数ペア:

[(1, 81378025), (5, 16275605), (23, 3538175), (25, 3255121), (115, 707635), (307, 265075), (461, 176525), (575, 141527), (1535, 53015), (2305, 35305), (7061, 11525), (7675, 10603)]