21329516

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{2371}}^1$

素因数の和:2561

約数の個数: 24

約数和(自身を含む): 40447344

約数和(自身を除く): 19117828

約数列:

[1, 2, 4, 13, 26, 52, 173, 346, 692, 2249, 2371, 4498, 4742, 8996, 9484, 30823, 61646, 123292, 410183, 820366, 1640732, 5332379, 10664758, 21329516]

約数ペア:

[(1, 21329516), (2, 10664758), (4, 5332379), (13, 1640732), (26, 820366), (52, 410183), (173, 123292), (346, 61646), (692, 30823), (2249, 9484), (2371, 8996), (4498, 4742)]