20821635

素因数分解:

$3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{5857}}^1$

素因数の和:5947

約数の個数: 24

約数和(自身を含む): 36553920

約数和(自身を除く): 15732285

約数列:

[1, 3, 5, 9, 15, 45, 79, 237, 395, 711, 1185, 3555, 5857, 17571, 29285, 52713, 87855, 263565, 462703, 1388109, 2313515, 4164327, 6940545, 20821635]

約数ペア:

[(1, 20821635), (3, 6940545), (5, 4164327), (9, 2313515), (15, 1388109), (45, 462703), (79, 263565), (237, 87855), (395, 52713), (711, 29285), (1185, 17571), (3555, 5857)]