21787384

素因数分解:

$2^3\times {\mathrm{103}}^1\times {\mathrm{137}}^1\times {\mathrm{193}}^1$

素因数の和:439

約数の個数: 32

約数和(自身を含む): 41764320

約数和(自身を除く): 19976936

約数列:

[1, 2, 4, 8, 103, 137, 193, 206, 274, 386, 412, 548, 772, 824, 1096, 1544, 14111, 19879, 26441, 28222, 39758, 52882, 56444, 79516, 105764, 112888, 159032, 211528, 2723423, 5446846, 10893692, 21787384]

約数ペア:

[(1, 21787384), (2, 10893692), (4, 5446846), (8, 2723423), (103, 211528), (137, 159032), (193, 112888), (206, 105764), (274, 79516), (386, 56444), (412, 52882), (548, 39758), (772, 28222), (824, 26441), (1096, 19879), (1544, 14111)]