19959728

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{65657}}^1$

素因数の和:65684

約数の個数: 20

約数和(自身を含む): 40707960

約数和(自身を除く): 20748232

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 65657, 131314, 262628, 525256, 1050512, 1247483, 2494966, 4989932, 9979864, 19959728]

約数ペア:

[(1, 19959728), (2, 9979864), (4, 4989932), (8, 2494966), (16, 1247483), (19, 1050512), (38, 525256), (76, 262628), (152, 131314), (304, 65657)]