20120853905

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{367}}^1\times {\mathrm{11087}}^1$

素因数の和:11525

約数の個数: 32

約数和(自身を含む): 25853313024

約数和(自身を除く): 5732459119

約数列:

[1, 5, 23, 43, 115, 215, 367, 989, 1835, 4945, 8441, 11087, 15781, 42205, 55435, 78905, 255001, 362963, 476741, 1275005, 1814815, 2383705, 4068929, 10965043, 20344645, 54825215, 93585367, 174963947, 467926835, 874819735, 4024170781, 20120853905]

約数ペア:

[(1, 20120853905), (5, 4024170781), (23, 874819735), (43, 467926835), (115, 174963947), (215, 93585367), (367, 54825215), (989, 20344645), (1835, 10965043), (4945, 4068929), (8441, 2383705), (11087, 1814815), (15781, 1275005), (42205, 476741), (55435, 362963), (78905, 255001)]