20865008

素因数分解:

$2^4\times {\mathrm{521}}^1\times {\mathrm{2503}}^1$

素因数の和:3032

約数の個数: 20

約数和(自身を含む): 40519728

約数和(自身を除く): 19654720

約数列:

[1, 2, 4, 8, 16, 521, 1042, 2084, 2503, 4168, 5006, 8336, 10012, 20024, 40048, 1304063, 2608126, 5216252, 10432504, 20865008]

約数ペア:

[(1, 20865008), (2, 10432504), (4, 5216252), (8, 2608126), (16, 1304063), (521, 40048), (1042, 20024), (2084, 10012), (2503, 8336), (4168, 5006)]