21031556

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3041}}^1$

素因数の和:3084

約数の個数: 48

約数和(自身を含む): 47698560

約数和(自身を除く): 26667004

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 38, 52, 76, 91, 133, 182, 247, 266, 364, 494, 532, 988, 1729, 3041, 3458, 6082, 6916, 12164, 21287, 39533, 42574, 57779, 79066, 85148, 115558, 158132, 231116, 276731, 404453, 553462, 751127, 808906, 1106924, 1502254, 1617812, 3004508, 5257889, 10515778, 21031556]

約数ペア:

[(1, 21031556), (2, 10515778), (4, 5257889), (7, 3004508), (13, 1617812), (14, 1502254), (19, 1106924), (26, 808906), (28, 751127), (38, 553462), (52, 404453), (76, 276731), (91, 231116), (133, 158132), (182, 115558), (247, 85148), (266, 79066), (364, 57779), (494, 42574), (532, 39533), (988, 21287), (1729, 12164), (3041, 6916), (3458, 6082)]