21255892

素因数分解:

$2^2\times 7^1\times {\mathrm{179}}^1\times {\mathrm{4241}}^1$

素因数の和:4431

約数の個数: 24

約数和(自身を含む): 42759360

約数和(自身を除く): 21503468

約数列:

[1, 2, 4, 7, 14, 28, 179, 358, 716, 1253, 2506, 4241, 5012, 8482, 16964, 29687, 59374, 118748, 759139, 1518278, 3036556, 5313973, 10627946, 21255892]

約数ペア:

[(1, 21255892), (2, 10627946), (4, 5313973), (7, 3036556), (14, 1518278), (28, 759139), (179, 118748), (358, 59374), (716, 29687), (1253, 16964), (2506, 8482), (4241, 5012)]