18739273

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1\times {\mathrm{487}}^1$

素因数の和:756

約数の個数: 16

約数和(自身を含む): 22487040

約数和(自身を除く): 3747767

約数列:

[1, 7, 23, 161, 239, 487, 1673, 3409, 5497, 11201, 38479, 78407, 116393, 814751, 2677039, 18739273]

約数ペア:

[(1, 18739273), (7, 2677039), (23, 814751), (161, 116393), (239, 78407), (487, 38479), (1673, 11201), (3409, 5497)]