21387884

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{33211}}^1$

素因数の和:33245

約数の個数: 24

約数和(自身を含む): 44636928

約数和(自身を除く): 23249044

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644, 33211, 66422, 132844, 232477, 464954, 763853, 929908, 1527706, 3055412, 5346971, 10693942, 21387884]

約数ペア:

[(1, 21387884), (2, 10693942), (4, 5346971), (7, 3055412), (14, 1527706), (23, 929908), (28, 763853), (46, 464954), (92, 232477), (161, 132844), (322, 66422), (644, 33211)]