1990857

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:141

約数の個数: 32

約数和(自身を含む): 3142656

約数和(自身を除く): 1151799

約数列:

[1, 3, 11, 23, 33, 43, 61, 69, 129, 183, 253, 473, 671, 759, 989, 1403, 1419, 2013, 2623, 2967, 4209, 7869, 10879, 15433, 28853, 32637, 46299, 60329, 86559, 180987, 663619, 1990857]

約数ペア:

[(1, 1990857), (3, 663619), (11, 180987), (23, 86559), (33, 60329), (43, 46299), (61, 32637), (69, 28853), (129, 15433), (183, 10879), (253, 7869), (473, 4209), (671, 2967), (759, 2623), (989, 2013), (1403, 1419)]