20541920

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18341}}^1$

素因数の和:18363

約数の個数: 48

約数和(自身を含む): 55466208

約数和(自身を除く): 34924288

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18341, 36682, 73364, 91705, 128387, 146728, 183410, 256774, 293456, 366820, 513548, 586912, 641935, 733640, 1027096, 1283870, 1467280, 2054192, 2567740, 2934560, 4108384, 5135480, 10270960, 20541920]

約数ペア:

[(1, 20541920), (2, 10270960), (4, 5135480), (5, 4108384), (7, 2934560), (8, 2567740), (10, 2054192), (14, 1467280), (16, 1283870), (20, 1027096), (28, 733640), (32, 641935), (35, 586912), (40, 513548), (56, 366820), (70, 293456), (80, 256774), (112, 183410), (140, 146728), (160, 128387), (224, 91705), (280, 73364), (560, 36682), (1120, 18341)]