21654896

素因数分解:

$2^4\times {\mathrm{509}}^1\times {\mathrm{2659}}^1$

素因数の和:3176

約数の個数: 20

約数和(自身を含む): 42054600

約数和(自身を除く): 20399704

約数列:

[1, 2, 4, 8, 16, 509, 1018, 2036, 2659, 4072, 5318, 8144, 10636, 21272, 42544, 1353431, 2706862, 5413724, 10827448, 21654896]

約数ペア:

[(1, 21654896), (2, 10827448), (4, 5413724), (8, 2706862), (16, 1353431), (509, 42544), (1018, 21272), (2036, 10636), (2659, 8144), (4072, 5318)]