21279076

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1103}}^1$

素因数の和:1180

約数の個数: 48

約数和(自身を含む): 46738944

約数和(自身を除く): 25459868

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 53, 91, 106, 182, 212, 364, 371, 689, 742, 1103, 1378, 1484, 2206, 2756, 4412, 4823, 7721, 9646, 14339, 15442, 19292, 28678, 30884, 57356, 58459, 100373, 116918, 200746, 233836, 401492, 409213, 759967, 818426, 1519934, 1636852, 3039868, 5319769, 10639538, 21279076]

約数ペア:

[(1, 21279076), (2, 10639538), (4, 5319769), (7, 3039868), (13, 1636852), (14, 1519934), (26, 818426), (28, 759967), (52, 409213), (53, 401492), (91, 233836), (106, 200746), (182, 116918), (212, 100373), (364, 58459), (371, 57356), (689, 30884), (742, 28678), (1103, 19292), (1378, 15442), (1484, 14339), (2206, 9646), (2756, 7721), (4412, 4823)]