21716373

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1471}}^1$

素因数の和:1537

約数の個数: 32

約数和(自身を含む): 35799040

約数和(自身を除く): 14082667

約数列:

[1, 3, 7, 19, 21, 37, 57, 111, 133, 259, 399, 703, 777, 1471, 2109, 4413, 4921, 10297, 14763, 27949, 30891, 54427, 83847, 163281, 195643, 380989, 586929, 1034113, 1142967, 3102339, 7238791, 21716373]

約数ペア:

[(1, 21716373), (3, 7238791), (7, 3102339), (19, 1142967), (21, 1034113), (37, 586929), (57, 380989), (111, 195643), (133, 163281), (259, 83847), (399, 54427), (703, 30891), (777, 27949), (1471, 14763), (2109, 10297), (4413, 4921)]