87409820

素因数分解:

$2^2\times 5^1\times {\mathrm{1019}}^1\times {\mathrm{4289}}^1$

素因数の和:5317

約数の個数: 24

約数和(自身を含む): 183783600

約数和(自身を除く): 96373780

約数列:

[1, 2, 4, 5, 10, 20, 1019, 2038, 4076, 4289, 5095, 8578, 10190, 17156, 20380, 21445, 42890, 85780, 4370491, 8740982, 17481964, 21852455, 43704910, 87409820]

約数ペア:

[(1, 87409820), (2, 43704910), (4, 21852455), (5, 17481964), (10, 8740982), (20, 4370491), (1019, 85780), (2038, 42890), (4076, 21445), (4289, 20380), (5095, 17156), (8578, 10190)]