21400336

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{19963}}^1$

素因数の和:20038

約数の個数: 20

約数和(自身を含む): 42084112

約数和(自身を除く): 20683776

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 19963, 39926, 79852, 159704, 319408, 1337521, 2675042, 5350084, 10700168, 21400336]

約数ペア:

[(1, 21400336), (2, 10700168), (4, 5350084), (8, 2675042), (16, 1337521), (67, 319408), (134, 159704), (268, 79852), (536, 39926), (1072, 19963)]