21556878

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{7229}}^1$

素因数の和:7312

約数の個数: 32

約数和(自身を含む): 49973760

約数和(自身を除く): 28416882

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 71, 142, 213, 426, 497, 994, 1491, 2982, 7229, 14458, 21687, 43374, 50603, 101206, 151809, 303618, 513259, 1026518, 1539777, 3079554, 3592813, 7185626, 10778439, 21556878]

約数ペア:

[(1, 21556878), (2, 10778439), (3, 7185626), (6, 3592813), (7, 3079554), (14, 1539777), (21, 1026518), (42, 513259), (71, 303618), (142, 151809), (213, 101206), (426, 50603), (497, 43374), (994, 21687), (1491, 14458), (2982, 7229)]