21354776

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{39841}}^1$

素因数の和:39914

約数の個数: 16

約数和(自身を含む): 40638840

約数和(自身を除く): 19284064

約数列:

[1, 2, 4, 8, 67, 134, 268, 536, 39841, 79682, 159364, 318728, 2669347, 5338694, 10677388, 21354776]

約数ペア:

[(1, 21354776), (2, 10677388), (4, 5338694), (8, 2669347), (67, 318728), (134, 159364), (268, 79682), (536, 39841)]