20889561

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{8221}}^1$

素因数の和:8253

約数の個数: 24

約数和(自身を含む): 34992832

約数和(自身を除く): 14103271

約数列:

[1, 3, 7, 11, 21, 33, 77, 121, 231, 363, 847, 2541, 8221, 24663, 57547, 90431, 172641, 271293, 633017, 994741, 1899051, 2984223, 6963187, 20889561]

約数ペア:

[(1, 20889561), (3, 6963187), (7, 2984223), (11, 1899051), (21, 994741), (33, 633017), (77, 271293), (121, 172641), (231, 90431), (363, 57547), (847, 24663), (2541, 8221)]