21696610

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:187

約数の個数: 64

約数和(自身を含む): 44416512

約数和(自身を除く): 22719902

約数列:

[1, 2, 5, 10, 13, 26, 47, 53, 65, 67, 94, 106, 130, 134, 235, 265, 335, 470, 530, 611, 670, 689, 871, 1222, 1378, 1742, 2491, 3055, 3149, 3445, 3551, 4355, 4982, 6110, 6298, 6890, 7102, 8710, 12455, 15745, 17755, 24910, 31490, 32383, 35510, 40937, 46163, 64766, 81874, 92326, 161915, 166897, 204685, 230815, 323830, 333794, 409370, 461630, 834485, 1668970, 2169661, 4339322, 10848305, 21696610]

約数ペア:

[(1, 21696610), (2, 10848305), (5, 4339322), (10, 2169661), (13, 1668970), (26, 834485), (47, 461630), (53, 409370), (65, 333794), (67, 323830), (94, 230815), (106, 204685), (130, 166897), (134, 161915), (235, 92326), (265, 81874), (335, 64766), (470, 46163), (530, 40937), (611, 35510), (670, 32383), (689, 31490), (871, 24910), (1222, 17755), (1378, 15745), (1742, 12455), (2491, 8710), (3055, 7102), (3149, 6890), (3445, 6298), (3551, 6110), (4355, 4982)]