20513456

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{16229}}^1$

素因数の和:16316

約数の個数: 20

約数和(自身を含む): 40250400

約数和(自身を除く): 19736944

約数列:

[1, 2, 4, 8, 16, 79, 158, 316, 632, 1264, 16229, 32458, 64916, 129832, 259664, 1282091, 2564182, 5128364, 10256728, 20513456]

約数ペア:

[(1, 20513456), (2, 10256728), (4, 5128364), (8, 2564182), (16, 1282091), (79, 259664), (158, 129832), (316, 64916), (632, 32458), (1264, 16229)]