21557076

素因数分解:

$2^2\times 3^1\times {\mathrm{103}}^1\times {\mathrm{107}}^1\times {\mathrm{163}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 51577344

約数和(自身を除く): 30020268

約数列:

[1, 2, 3, 4, 6, 12, 103, 107, 163, 206, 214, 309, 321, 326, 412, 428, 489, 618, 642, 652, 978, 1236, 1284, 1956, 11021, 16789, 17441, 22042, 33063, 33578, 34882, 44084, 50367, 52323, 66126, 67156, 69764, 100734, 104646, 132252, 201468, 209292, 1796423, 3592846, 5389269, 7185692, 10778538, 21557076]

約数ペア:

[(1, 21557076), (2, 10778538), (3, 7185692), (4, 5389269), (6, 3592846), (12, 1796423), (103, 209292), (107, 201468), (163, 132252), (206, 104646), (214, 100734), (309, 69764), (321, 67156), (326, 66126), (412, 52323), (428, 50367), (489, 44084), (618, 34882), (642, 33578), (652, 33063), (978, 22042), (1236, 17441), (1284, 16789), (1956, 11021)]