20819513

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:185

約数の個数: 32

約数和(自身を含む): 25909632

約数和(自身を除く): 5090119

約数列:

[1, 11, 13, 41, 53, 67, 143, 451, 533, 583, 689, 737, 871, 2173, 2747, 3551, 5863, 7579, 9581, 23903, 28249, 30217, 35711, 39061, 46163, 145591, 310739, 392821, 507793, 1601501, 1892683, 20819513]

約数ペア:

[(1, 20819513), (11, 1892683), (13, 1601501), (41, 507793), (53, 392821), (67, 310739), (143, 145591), (451, 46163), (533, 39061), (583, 35711), (689, 30217), (737, 28249), (871, 23903), (2173, 9581), (2747, 7579), (3551, 5863)]