21515978

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{67}}^1\times {\mathrm{1327}}^1$

素因数の和:1418

約数の個数: 24

約数和(自身を含む): 36031296

約数和(自身を除く): 14515318

約数列:

[1, 2, 11, 22, 67, 121, 134, 242, 737, 1327, 1474, 2654, 8107, 14597, 16214, 29194, 88909, 160567, 177818, 321134, 977999, 1955998, 10757989, 21515978]

約数ペア:

[(1, 21515978), (2, 10757989), (11, 1955998), (22, 977999), (67, 321134), (121, 177818), (134, 160567), (242, 88909), (737, 29194), (1327, 16214), (1474, 14597), (2654, 8107)]