21441805

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{83}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 33247872

約数和(自身を除く): 11806067

約数列:

[1, 5, 7, 11, 35, 55, 61, 77, 83, 121, 305, 385, 415, 427, 581, 605, 671, 847, 913, 2135, 2905, 3355, 4235, 4565, 4697, 5063, 6391, 7381, 10043, 23485, 25315, 31955, 35441, 36905, 50215, 51667, 55693, 70301, 177205, 258335, 278465, 351505, 389851, 612623, 1949255, 3063115, 4288361, 21441805]

約数ペア:

[(1, 21441805), (5, 4288361), (7, 3063115), (11, 1949255), (35, 612623), (55, 389851), (61, 351505), (77, 278465), (83, 258335), (121, 177205), (305, 70301), (385, 55693), (415, 51667), (427, 50215), (581, 36905), (605, 35441), (671, 31955), (847, 25315), (913, 23485), (2135, 10043), (2905, 7381), (3355, 6391), (4235, 5063), (4565, 4697)]