21393944

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{18701}}^1$

素因数の和:18731

約数の個数: 32

約数和(自身を含む): 47129040

約数和(自身を除く): 25735096

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 286, 572, 1144, 18701, 37402, 74804, 149608, 205711, 243113, 411422, 486226, 822844, 972452, 1645688, 1944904, 2674243, 5348486, 10696972, 21393944]

約数ペア:

[(1, 21393944), (2, 10696972), (4, 5348486), (8, 2674243), (11, 1944904), (13, 1645688), (22, 972452), (26, 822844), (44, 486226), (52, 411422), (88, 243113), (104, 205711), (143, 149608), (286, 74804), (572, 37402), (1144, 18701)]