20912115

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{719}}^1$

素因数の和:1011

約数の個数: 32

約数和(自身を含む): 38430720

約数和(自身を除く): 17518605

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 277, 719, 831, 1385, 1939, 2157, 3595, 4155, 5033, 5817, 9695, 10785, 15099, 25165, 29085, 75495, 199163, 597489, 995815, 1394141, 2987445, 4182423, 6970705, 20912115]

約数ペア:

[(1, 20912115), (3, 6970705), (5, 4182423), (7, 2987445), (15, 1394141), (21, 995815), (35, 597489), (105, 199163), (277, 75495), (719, 29085), (831, 25165), (1385, 15099), (1939, 10785), (2157, 9695), (3595, 5817), (4155, 5033)]