20404615

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{52999}}^1$

素因数の和:53022

約数の個数: 16

約数和(自身を含む): 30528000

約数和(自身を除く): 10123385

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 52999, 264995, 370993, 582989, 1854965, 2914945, 4080923, 20404615]

約数ペア:

[(1, 20404615), (5, 4080923), (7, 2914945), (11, 1854965), (35, 582989), (55, 370993), (77, 264995), (385, 52999)]