21090440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{75323}}^1$

素因数の和:75341

約数の個数: 32

約数和(自身を含む): 54233280

約数和(自身を除く): 33142840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 75323, 150646, 301292, 376615, 527261, 602584, 753230, 1054522, 1506460, 2109044, 2636305, 3012920, 4218088, 5272610, 10545220, 21090440]

約数ペア:

[(1, 21090440), (2, 10545220), (4, 5272610), (5, 4218088), (7, 3012920), (8, 2636305), (10, 2109044), (14, 1506460), (20, 1054522), (28, 753230), (35, 602584), (40, 527261), (56, 376615), (70, 301292), (140, 150646), (280, 75323)]