21663256

素因数分解:

$2^3\times {\mathrm{1319}}^1\times {\mathrm{2053}}^1$

素因数の和:3378

約数の個数: 16

約数和(自身を含む): 40669200

約数和(自身を除く): 19005944

約数列:

[1, 2, 4, 8, 1319, 2053, 2638, 4106, 5276, 8212, 10552, 16424, 2707907, 5415814, 10831628, 21663256]

約数ペア:

[(1, 21663256), (2, 10831628), (4, 5415814), (8, 2707907), (1319, 16424), (2053, 10552), (2638, 8212), (4106, 5276)]