1998787

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1$

素因数の和:250

約数の個数: 16

約数和(自身を含む): 2412544

約数和(自身を除く): 413757

約数列:

[1, 7, 31, 61, 151, 217, 427, 1057, 1891, 4681, 9211, 13237, 32767, 64477, 285541, 1998787]

約数ペア:

[(1, 1998787), (7, 285541), (31, 64477), (61, 32767), (151, 13237), (217, 9211), (427, 4681), (1057, 1891)]