21713890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{1811}}^1$

素因数の和:1938

約数の個数: 32

約数和(自身を含む): 43053120

約数和(自身を除く): 21339230

約数列:

[1, 2, 5, 10, 11, 22, 55, 109, 110, 218, 545, 1090, 1199, 1811, 2398, 3622, 5995, 9055, 11990, 18110, 19921, 39842, 99605, 197399, 199210, 394798, 986995, 1973990, 2171389, 4342778, 10856945, 21713890]

約数ペア:

[(1, 21713890), (2, 10856945), (5, 4342778), (10, 2171389), (11, 1973990), (22, 986995), (55, 394798), (109, 199210), (110, 197399), (218, 99605), (545, 39842), (1090, 19921), (1199, 18110), (1811, 11990), (2398, 9055), (3622, 5995)]