20378943

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{7573}}^1$

素因数の和:7615

約数の個数: 24

約数和(自身を含む): 33083232

約数和(自身を除く): 12704289

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 207, 299, 897, 2691, 7573, 22719, 68157, 98449, 174179, 295347, 522537, 886041, 1567611, 2264327, 6792981, 20378943]

約数ペア:

[(1, 20378943), (3, 6792981), (9, 2264327), (13, 1567611), (23, 886041), (39, 522537), (69, 295347), (117, 174179), (207, 98449), (299, 68157), (897, 22719), (2691, 7573)]