21115192

素因数分解:

$2^3\times 7^1\times {\mathrm{211}}^1\times {\mathrm{1787}}^1$

素因数の和:2011

約数の個数: 32

約数和(自身を含む): 45486720

約数和(自身を除く): 24371528

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 211, 422, 844, 1477, 1688, 1787, 2954, 3574, 5908, 7148, 11816, 12509, 14296, 25018, 50036, 100072, 377057, 754114, 1508228, 2639399, 3016456, 5278798, 10557596, 21115192]

約数ペア:

[(1, 21115192), (2, 10557596), (4, 5278798), (7, 3016456), (8, 2639399), (14, 1508228), (28, 754114), (56, 377057), (211, 100072), (422, 50036), (844, 25018), (1477, 14296), (1688, 12509), (1787, 11816), (2954, 7148), (3574, 5908)]