210901820

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{16451}}^1$

素因数の和:17101

約数の個数: 24

約数和(自身を含む): 443611728

約数和(自身を除く): 232709908

約数列:

[1, 2, 4, 5, 10, 20, 641, 1282, 2564, 3205, 6410, 12820, 16451, 32902, 65804, 82255, 164510, 329020, 10545091, 21090182, 42180364, 52725455, 105450910, 210901820]

約数ペア:

[(1, 210901820), (2, 105450910), (4, 52725455), (5, 42180364), (10, 21090182), (20, 10545091), (641, 329020), (1282, 164510), (2564, 82255), (3205, 65804), (6410, 32902), (12820, 16451)]