648408025

素因数分解:

$5^2\times {\mathrm{127}}^1\times {\mathrm{443}}^1\times {\mathrm{461}}^1$

素因数の和:1041

約数の個数: 24

約数和(自身を含む): 813947904

約数和(自身を除く): 165539879

約数列:

[1, 5, 25, 127, 443, 461, 635, 2215, 2305, 3175, 11075, 11525, 56261, 58547, 204223, 281305, 292735, 1021115, 1406525, 1463675, 5105575, 25936321, 129681605, 648408025]

約数ペア:

[(1, 648408025), (5, 129681605), (25, 25936321), (127, 5105575), (443, 1463675), (461, 1406525), (635, 1021115), (2215, 292735), (2305, 281305), (3175, 204223), (11075, 58547), (11525, 56261)]