378878225

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{251}}^1\times {\mathrm{499}}^1$

素因数の和:782

約数の個数: 36

約数和(自身を含む): 519498000

約数和(自身を除く): 140619775

約数列:

[1, 5, 11, 25, 55, 121, 251, 275, 499, 605, 1255, 2495, 2761, 3025, 5489, 6275, 12475, 13805, 27445, 30371, 60379, 69025, 125249, 137225, 151855, 301895, 626245, 759275, 1377739, 1509475, 3131225, 6888695, 15155129, 34443475, 75775645, 378878225]

約数ペア:

[(1, 378878225), (5, 75775645), (11, 34443475), (25, 15155129), (55, 6888695), (121, 3131225), (251, 1509475), (275, 1377739), (499, 759275), (605, 626245), (1255, 301895), (2495, 151855), (2761, 137225), (3025, 125249), (5489, 69025), (6275, 60379), (12475, 30371), (13805, 27445)]