20654405

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{5651}}^1$

素因数の和:5716

約数の個数: 16

約数和(自身を含む): 26858304

約数和(自身を除く): 6203899

約数列:

[1, 5, 17, 43, 85, 215, 731, 3655, 5651, 28255, 96067, 242993, 480335, 1214965, 4130881, 20654405]

約数ペア:

[(1, 20654405), (5, 4130881), (17, 1214965), (43, 480335), (85, 242993), (215, 96067), (731, 28255), (3655, 5651)]