21171196

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{197}}^1\times {\mathrm{401}}^1$

素因数の和:669

約数の個数: 24

約数和(自身を含む): 37887696

約数和(自身を除く): 16716500

約数列:

[1, 2, 4, 67, 134, 197, 268, 394, 401, 788, 802, 1604, 13199, 26398, 26867, 52796, 53734, 78997, 107468, 157994, 315988, 5292799, 10585598, 21171196]

約数ペア:

[(1, 21171196), (2, 10585598), (4, 5292799), (67, 315988), (134, 157994), (197, 107468), (268, 78997), (394, 53734), (401, 52796), (788, 26867), (802, 26398), (1604, 13199)]