21218512

素因数分解:

$2^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{8237}}^1$

素因数の和:8275

約数の個数: 40

約数和(自身を含む): 49032576

約数和(自身を除く): 27814064

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 46, 56, 92, 112, 161, 184, 322, 368, 644, 1288, 2576, 8237, 16474, 32948, 57659, 65896, 115318, 131792, 189451, 230636, 378902, 461272, 757804, 922544, 1326157, 1515608, 2652314, 3031216, 5304628, 10609256, 21218512]

約数ペア:

[(1, 21218512), (2, 10609256), (4, 5304628), (7, 3031216), (8, 2652314), (14, 1515608), (16, 1326157), (23, 922544), (28, 757804), (46, 461272), (56, 378902), (92, 230636), (112, 189451), (161, 131792), (184, 115318), (322, 65896), (368, 57659), (644, 32948), (1288, 16474), (2576, 8237)]