20907745

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{1291}}^1$

素因数の和:1416

約数の個数: 16

約数和(自身を含む): 26046720

約数和(自身を除く): 5138975

約数列:

[1, 5, 41, 79, 205, 395, 1291, 3239, 6455, 16195, 52931, 101989, 264655, 509945, 4181549, 20907745]

約数ペア:

[(1, 20907745), (5, 4181549), (41, 509945), (79, 264655), (205, 101989), (395, 52931), (1291, 16195), (3239, 6455)]