21380768

素因数分解:

$2^5\times {\mathrm{137}}^1\times {\mathrm{4877}}^1$

素因数の和:5024

約数の個数: 24

約数和(自身を含む): 42409332

約数和(自身を除く): 21028564

約数列:

[1, 2, 4, 8, 16, 32, 137, 274, 548, 1096, 2192, 4384, 4877, 9754, 19508, 39016, 78032, 156064, 668149, 1336298, 2672596, 5345192, 10690384, 21380768]

約数ペア:

[(1, 21380768), (2, 10690384), (4, 5345192), (8, 2672596), (16, 1336298), (32, 668149), (137, 156064), (274, 78032), (548, 39016), (1096, 19508), (2192, 9754), (4384, 4877)]