21137564

素因数分解:

$2^2\times 7^1\times {\mathrm{307}}^1\times {\mathrm{2459}}^1$

素因数の和:2777

約数の個数: 24

約数和(自身を含む): 42430080

約数和(自身を除く): 21292516

約数列:

[1, 2, 4, 7, 14, 28, 307, 614, 1228, 2149, 2459, 4298, 4918, 8596, 9836, 17213, 34426, 68852, 754913, 1509826, 3019652, 5284391, 10568782, 21137564]

約数ペア:

[(1, 21137564), (2, 10568782), (4, 5284391), (7, 3019652), (14, 1509826), (28, 754913), (307, 68852), (614, 34426), (1228, 17213), (2149, 9836), (2459, 8596), (4298, 4918)]