21480788

素因数分解:

$2^2\times 7^1\times {\mathrm{263}}^1\times {\mathrm{2917}}^1$

素因数の和:3191

約数の個数: 24

約数和(自身を含む): 43139712

約数和(自身を除く): 21658924

約数列:

[1, 2, 4, 7, 14, 28, 263, 526, 1052, 1841, 2917, 3682, 5834, 7364, 11668, 20419, 40838, 81676, 767171, 1534342, 3068684, 5370197, 10740394, 21480788]

約数ペア:

[(1, 21480788), (2, 10740394), (4, 5370197), (7, 3068684), (14, 1534342), (28, 767171), (263, 81676), (526, 40838), (1052, 20419), (1841, 11668), (2917, 7364), (3682, 5834)]