21074053

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{569}}^1$

素因数の和:637

約数の個数: 32

約数和(自身を含む): 29111040

約数和(自身を除く): 8036987

約数列:

[1, 7, 11, 13, 37, 77, 91, 143, 259, 407, 481, 569, 1001, 2849, 3367, 3983, 5291, 6259, 7397, 21053, 37037, 43813, 51779, 81367, 147371, 231583, 273689, 569569, 1621081, 1915823, 3010579, 21074053]

約数ペア:

[(1, 21074053), (7, 3010579), (11, 1915823), (13, 1621081), (37, 569569), (77, 273689), (91, 231583), (143, 147371), (259, 81367), (407, 51779), (481, 43813), (569, 37037), (1001, 21053), (2849, 7397), (3367, 6259), (3983, 5291)]