21890776

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{40841}}^1$

素因数の和:40914

約数の個数: 16

約数和(自身を含む): 41658840

約数和(自身を除く): 19768064

約数列:

[1, 2, 4, 8, 67, 134, 268, 536, 40841, 81682, 163364, 326728, 2736347, 5472694, 10945388, 21890776]

約数ペア:

[(1, 21890776), (2, 10945388), (4, 5472694), (8, 2736347), (67, 326728), (134, 163364), (268, 81682), (536, 40841)]