21394177

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 27447552

約数和(自身を除く): 6053375

約数列:

[1, 7, 17, 37, 43, 113, 119, 259, 301, 629, 731, 791, 1591, 1921, 4181, 4403, 4859, 5117, 11137, 13447, 27047, 29267, 34013, 71077, 82603, 179783, 189329, 497539, 578221, 1258481, 3056311, 21394177]

約数ペア:

[(1, 21394177), (7, 3056311), (17, 1258481), (37, 578221), (43, 497539), (113, 189329), (119, 179783), (259, 82603), (301, 71077), (629, 34013), (731, 29267), (791, 27047), (1591, 13447), (1921, 11137), (4181, 5117), (4403, 4859)]