20264855

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1$

素因数の和:251

約数の個数: 32

約数和(自身を含む): 27578880

約数和(自身を除く): 7314025

約数列:

[1, 5, 13, 31, 65, 89, 113, 155, 403, 445, 565, 1157, 1469, 2015, 2759, 3503, 5785, 7345, 10057, 13795, 17515, 35867, 45539, 50285, 130741, 179335, 227695, 311767, 653705, 1558835, 4052971, 20264855]

約数ペア:

[(1, 20264855), (5, 4052971), (13, 1558835), (31, 653705), (65, 311767), (89, 227695), (113, 179335), (155, 130741), (403, 50285), (445, 45539), (565, 35867), (1157, 17515), (1469, 13795), (2015, 10057), (2759, 7345), (3503, 5785)]