21367408

素因数分解:

$2^4\times {\mathrm{197}}^1\times {\mathrm{6779}}^1$

素因数の和:6984

約数の個数: 20

約数和(自身を含む): 41615640

約数和(自身を除く): 20248232

約数列:

[1, 2, 4, 8, 16, 197, 394, 788, 1576, 3152, 6779, 13558, 27116, 54232, 108464, 1335463, 2670926, 5341852, 10683704, 21367408]

約数ペア:

[(1, 21367408), (2, 10683704), (4, 5341852), (8, 2670926), (16, 1335463), (197, 108464), (394, 54232), (788, 27116), (1576, 13558), (3152, 6779)]