1561222

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:208

約数の個数: 24

約数和(自身を含む): 2635200

約数和(自身を除く): 1073978

約数列:

[1, 2, 13, 26, 31, 62, 149, 169, 298, 338, 403, 806, 1937, 3874, 4619, 5239, 9238, 10478, 25181, 50362, 60047, 120094, 780611, 1561222]

約数ペア:

[(1, 1561222), (2, 780611), (13, 120094), (26, 60047), (31, 50362), (62, 25181), (149, 10478), (169, 9238), (298, 5239), (338, 4619), (403, 3874), (806, 1937)]