213782639

素因数分解:

$7^4\times {\mathrm{269}}^1\times {\mathrm{331}}^1$

素因数の和:628

約数の個数: 20

約数和(自身を含む): 251081640

約数和(自身を除く): 37299001

約数列:

[1, 7, 49, 269, 331, 343, 1883, 2317, 2401, 13181, 16219, 89039, 92267, 113533, 623273, 645869, 794731, 4362911, 30540377, 213782639]

約数ペア:

[(1, 213782639), (7, 30540377), (49, 4362911), (269, 794731), (331, 645869), (343, 623273), (1883, 113533), (2317, 92267), (2401, 89039), (13181, 16219)]