20516880

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{85487}}^1$

素因数の和:85503

約数の個数: 40

約数和(自身を含む): 63603072

約数和(自身を除く): 43086192

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 85487, 170974, 256461, 341948, 427435, 512922, 683896, 854870, 1025844, 1282305, 1367792, 1709740, 2051688, 2564610, 3419480, 4103376, 5129220, 6838960, 10258440, 20516880]

約数ペア:

[(1, 20516880), (2, 10258440), (3, 6838960), (4, 5129220), (5, 4103376), (6, 3419480), (8, 2564610), (10, 2051688), (12, 1709740), (15, 1367792), (16, 1282305), (20, 1025844), (24, 854870), (30, 683896), (40, 512922), (48, 427435), (60, 341948), (80, 256461), (120, 170974), (240, 85487)]