21455216

素因数分解:

$2^4\times {\mathrm{971}}^1\times {\mathrm{1381}}^1$

素因数の和:2360

約数の個数: 20

約数和(自身を含む): 41642424

約数和(自身を除く): 20187208

約数列:

[1, 2, 4, 8, 16, 971, 1381, 1942, 2762, 3884, 5524, 7768, 11048, 15536, 22096, 1340951, 2681902, 5363804, 10727608, 21455216]

約数ペア:

[(1, 21455216), (2, 10727608), (4, 5363804), (8, 2681902), (16, 1340951), (971, 22096), (1381, 15536), (1942, 11048), (2762, 7768), (3884, 5524)]