20213306540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{20625823}}^1$

素因数の和:20625846

約数の個数: 36

約数和(自身を含む): 49378222656

約数和(自身を除く): 29164916116

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20625823, 41251646, 82503292, 103129115, 144380761, 206258230, 288761522, 412516460, 577523044, 721903805, 1010665327, 1443807610, 2021330654, 2887615220, 4042661308, 5053326635, 10106653270, 20213306540]

約数ペア:

[(1, 20213306540), (2, 10106653270), (4, 5053326635), (5, 4042661308), (7, 2887615220), (10, 2021330654), (14, 1443807610), (20, 1010665327), (28, 721903805), (35, 577523044), (49, 412516460), (70, 288761522), (98, 206258230), (140, 144380761), (196, 103129115), (245, 82503292), (490, 41251646), (980, 20625823)]