180242020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{18133}}^1$

素因数の和:18220

約数の個数: 48

約数和(自身を含む): 438697728

約数和(自身を除く): 258455708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 18133, 36266, 72532, 90665, 126931, 181330, 253862, 362660, 507724, 634655, 1269310, 1287443, 2538620, 2574886, 5149772, 6437215, 9012101, 12874430, 18024202, 25748860, 36048404, 45060505, 90121010, 180242020]

約数ペア:

[(1, 180242020), (2, 90121010), (4, 45060505), (5, 36048404), (7, 25748860), (10, 18024202), (14, 12874430), (20, 9012101), (28, 6437215), (35, 5149772), (70, 2574886), (71, 2538620), (140, 1287443), (142, 1269310), (284, 634655), (355, 507724), (497, 362660), (710, 253862), (994, 181330), (1420, 126931), (1988, 90665), (2485, 72532), (4970, 36266), (9940, 18133)]