21952280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{78401}}^1$

素因数の和:78419

約数の個数: 32

約数和(自身を含む): 56449440

約数和(自身を除く): 34497160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 78401, 156802, 313604, 392005, 548807, 627208, 784010, 1097614, 1568020, 2195228, 2744035, 3136040, 4390456, 5488070, 10976140, 21952280]

約数ペア:

[(1, 21952280), (2, 10976140), (4, 5488070), (5, 4390456), (7, 3136040), (8, 2744035), (10, 2195228), (14, 1568020), (20, 1097614), (28, 784010), (35, 627208), (40, 548807), (56, 392005), (70, 313604), (140, 156802), (280, 78401)]