17891999

素因数分解:

${\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{229}}^1$

素因数の和:374

約数の個数: 16

約数和(自身を含む): 19430400

約数和(自身を除く): 1538401

約数列:

[1, 23, 43, 79, 229, 989, 1817, 3397, 5267, 9847, 18091, 78131, 226481, 416093, 777913, 17891999]

約数ペア:

[(1, 17891999), (23, 777913), (43, 416093), (79, 226481), (229, 78131), (989, 18091), (1817, 9847), (3397, 5267)]