21040256

素因数分解:

$2^7\times {\mathrm{164377}}^1$

素因数の和:164391

約数の個数: 16

約数和(自身を含む): 41916390

約数和(自身を除く): 20876134

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 164377, 328754, 657508, 1315016, 2630032, 5260064, 10520128, 21040256]

約数ペア:

[(1, 21040256), (2, 10520128), (4, 5260064), (8, 2630032), (16, 1315016), (32, 657508), (64, 328754), (128, 164377)]