21289444

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{193}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 43021440

約数和(自身を除く): 21731996

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 92, 109, 193, 218, 253, 386, 436, 506, 772, 1012, 1199, 2123, 2398, 2507, 4246, 4439, 4796, 5014, 8492, 8878, 10028, 17756, 21037, 27577, 42074, 48829, 55154, 84148, 97658, 110308, 195316, 231407, 462814, 483851, 925628, 967702, 1935404, 5322361, 10644722, 21289444]

約数ペア:

[(1, 21289444), (2, 10644722), (4, 5322361), (11, 1935404), (22, 967702), (23, 925628), (44, 483851), (46, 462814), (92, 231407), (109, 195316), (193, 110308), (218, 97658), (253, 84148), (386, 55154), (436, 48829), (506, 42074), (772, 27577), (1012, 21037), (1199, 17756), (2123, 10028), (2398, 8878), (2507, 8492), (4246, 5014), (4439, 4796)]