21384260

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{8419}}^1$

素因数の和:8555

約数の個数: 24

約数和(自身を含む): 45265920

約数和(自身を除く): 23881660

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 1270, 2540, 8419, 16838, 33676, 42095, 84190, 168380, 1069213, 2138426, 4276852, 5346065, 10692130, 21384260]

約数ペア:

[(1, 21384260), (2, 10692130), (4, 5346065), (5, 4276852), (10, 2138426), (20, 1069213), (127, 168380), (254, 84190), (508, 42095), (635, 33676), (1270, 16838), (2540, 8419)]