27987969

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{601}}^1$

素因数の和:685

約数の個数: 24

約数和(自身を含む): 40367712

約数和(自身を除く): 12379743

約数列:

[1, 3, 19, 43, 57, 129, 361, 601, 817, 1083, 1803, 2451, 11419, 15523, 25843, 34257, 46569, 77529, 216961, 491017, 650883, 1473051, 9329323, 27987969]

約数ペア:

[(1, 27987969), (3, 9329323), (19, 1473051), (43, 650883), (57, 491017), (129, 216961), (361, 77529), (601, 46569), (817, 34257), (1083, 25843), (1803, 15523), (2451, 11419)]