21217292

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{4657}}^1$

素因数の和:4745

約数の個数: 24

約数和(自身を含む): 39909744

約数和(自身を除く): 18692452

約数列:

[1, 2, 4, 17, 34, 67, 68, 134, 268, 1139, 2278, 4556, 4657, 9314, 18628, 79169, 158338, 312019, 316676, 624038, 1248076, 5304323, 10608646, 21217292]

約数ペア:

[(1, 21217292), (2, 10608646), (4, 5304323), (17, 1248076), (34, 624038), (67, 316676), (68, 312019), (134, 158338), (268, 79169), (1139, 18628), (2278, 9314), (4556, 4657)]