2688366820

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{209701}}^1$

素因数の和:210351

約数の個数: 24

約数和(自身を含む): 5654404728

約数和(自身を除く): 2966037908

約数列:

[1, 2, 4, 5, 10, 20, 641, 1282, 2564, 3205, 6410, 12820, 209701, 419402, 838804, 1048505, 2097010, 4194020, 134418341, 268836682, 537673364, 672091705, 1344183410, 2688366820]

約数ペア:

[(1, 2688366820), (2, 1344183410), (4, 672091705), (5, 537673364), (10, 268836682), (20, 134418341), (641, 4194020), (1282, 2097010), (2564, 1048505), (3205, 838804), (6410, 419402), (12820, 209701)]