21953488

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{20479}}^1$

素因数の和:20554

約数の個数: 20

約数和(自身を含む): 43171840

約数和(自身を除く): 21218352

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 20479, 40958, 81916, 163832, 327664, 1372093, 2744186, 5488372, 10976744, 21953488]

約数ペア:

[(1, 21953488), (2, 10976744), (4, 5488372), (8, 2744186), (16, 1372093), (67, 327664), (134, 163832), (268, 81916), (536, 40958), (1072, 20479)]